| leonine | (adjective) of or characteristic of or resembling a lion | - |
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| leptorhine | (adjective) having a long narrow nose | Synonyms: leptorrhine, leptorrhinian, leptorrhinic |
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| leptorrhine | (adjective) having a long narrow nose | Synonyms: leptorhine, leptorrhinian, leptorrhinic |
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| leucine | (noun) a white crystalline amino acid occurring in proteins that is essential for nutrition; obtained by the hydrolysis of most dietary proteins | - |
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| libertine | (adjective) unrestrained by convention or morality | Synonyms: debauched, degenerate, degraded, dissipated, dissolute, fast, profligate, riotous |
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| (noun) a dissolute person; usually a man who is morally unrestrained | Synonyms: debauchee, rounder |
| lifeline | (noun) line thrown from a vessel that people can cling to in order to save themselves from drowning | - |
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| (noun) line that raises or lowers a deep-sea diver | - |
| (noun) support that enables people to survive or to continue doing something (often by providing an essential connection) | - |
| (noun) a crease on the palm; its length is said by palmists to indicate how long you will live | Synonyms: life line, line of life |
| limacine | (adjective) of or resembling a slug | Synonyms: limacoid |
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| limousine | (noun) large luxurious car; usually driven by a chauffeur | Synonyms: limo |
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| line | (noun) the principal activity in your life that you do to earn money | Synonyms: business, job, line of work, occupation |
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| (noun) acting in conformity | - |
| (noun) something (as a cord or rope) that is long and thin and flexible | - |
| (noun) a conductor for transmitting electrical or optical signals or electric power | Synonyms: cable, transmission line |
| (noun) the road consisting of railroad track and roadbed | Synonyms: rail line, railway line |
| (noun) a commercial organization serving as a common carrier | - |
| (noun) a pipe used to transport liquids or gases | Synonyms: pipeline |
| (noun) a telephone connection | Synonyms: phone line, subscriber line, telephone circuit, telephone line |
| (noun) a particular kind of product or merchandise | Synonyms: business line, line of business, line of merchandise, line of products, product line |
| (noun) mechanical system in a factory whereby an article is conveyed through sites at which successive operations are performed on it | Synonyms: assembly line, production line |
| (noun) a conceptual separation or distinction | Synonyms: contrast, demarcation, dividing line |
| (noun) a course of reasoning aimed at demonstrating a truth or falsehood; the methodical process of logical reasoning | Synonyms: argument, argumentation, line of reasoning, logical argument |
| (noun) a mark that is long relative to its width | - |
| (noun) text consisting of a row of words written across a page or computer screen | - |
| (noun) a succession of notes forming a distinctive sequence | Synonyms: air, melodic line, melodic phrase, melody, strain, tune |
| (noun) a short personal letter | Synonyms: billet, note, short letter |
| (noun) (often plural) a means of communication or access | Synonyms: channel, communication channel |
| (noun) persuasive but insincere talk that is usually intended to deceive or impress | - |
| (noun) the hereditary derivation of an individual | Synonyms: ancestry, blood, blood line, bloodline, descent, line of descent, lineage, origin, parentage, pedigree, stemma, stock |
| (noun) a formation of people or things one behind another | - |
| (noun) a connected series of events or actions or developments | Synonyms: course |
| (noun) a formation of people or things one beside another | - |
| (noun) a spatial location defined by a real or imaginary unidimensional extent | - |
| (noun) in games or sports; a mark indicating positions or bounds of the playing area | - |
| (noun) a fortified position (especially one marking the most forward position of troops) | - |
| (noun) a single frequency (or very narrow band) of radiation in a spectrum | - |
| (noun) the maximum credit that a customer is allowed | Synonyms: bank line, credit line, line of credit, personal credit line, personal line of credit |
| (noun) space for one line of print (one column wide and 1/14 inch deep) used to measure advertising | Synonyms: agate line |
| (noun) a length (straight or curved) without breadth or thickness; the trace of a moving point | - |
| (noun) a slight depression or fold in the smoothness of a surface | Synonyms: crease, crinkle, furrow, seam, wrinkle |
| (verb) fill plentifully | - |
| (verb) reinforce with fabric | - |
| (verb) cover the interior of | - |
| (verb) make a mark or lines on a surface | Synonyms: delineate, describe, draw, trace |
| (verb) mark with lines | - |
| (verb) be in line with; form a line along | Synonyms: run along |
| linguine | (noun) pasta in long slender flat strips | Synonyms: linguini |
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| liothyronine | (noun) thyroid hormone similar to thyroxine but with one less iodine atom per molecule and produced in smaller quantity; exerts the same biological effects as thyroxine but is more potent and briefer | Synonyms: T, triiodothyronine |
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| lomustine | (noun) an antineoplastic drug often used to treat brain tumors or Hodgkin's disease | - |
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| loxapine | (noun) a tranquilizer (trade name Loxitane) used to treat schizophrenia | Synonyms: Loxitane |
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| lupine | (adjective) of or relating to or characteristic of wolves | - |
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| (noun) any plant of the genus Lupinus; bearing erect spikes of usually purplish-blue flowers | Synonyms: lupin |
| lymphokine | (noun) a cytokine secreted by helper T cells in response to stimulation by antigens and that acts on other cells of the immune system (as by activating macrophages) | - |
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| lysine | (noun) an essential amino acid found in proteins; occurs especially in gelatin and casein | - |
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| macedoine | (noun) mixed diced fruits or vegetables; hot or cold | - |
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| machine | (noun) any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks | - |
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| (noun) a motor vehicle with four wheels; usually propelled by an internal combustion engine | Synonyms: auto, automobile, car, motorcar |
| (noun) a device for overcoming resistance at one point by applying force at some other point | Synonyms: simple machine |
| (noun) a group that controls the activities of a political party | Synonyms: political machine |
| (noun) an intricate organization that accomplishes its goals efficiently | - |
| (noun) an efficient person | - |
| (verb) make by machinery | - |
| (verb) turn, shape, mold, or otherwise finish by machinery | - |
| magazine | (noun) a storehouse (as a compartment on a warship) where weapons and ammunition are stored | Synonyms: powder magazine, powder store |
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| (noun) product consisting of a paperback periodic publication as a physical object | - |
| (noun) a metal frame or container holding cartridges; can be inserted into an automatic gun | Synonyms: cartridge clip, cartridge holder, clip |
| (noun) a light-tight supply chamber holding the film and supplying it for exposure as required | Synonyms: cartridge |
| (noun) a periodic publication containing pictures and stories and articles of interest to those who purchase it or subscribe to it | Synonyms: mag |
| (noun) a business firm that publishes magazines | Synonyms: magazine publisher |
| mainline | (verb) inject into the vein | - |
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| margarine | (noun) a spread made chiefly from vegetable oils and used as a substitute for butter | Synonyms: margarin, marge, oleo, oleomargarine |
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| marine | (adjective) relating to or characteristic of or occurring on or in the sea | - |
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| (adjective) of or relating to the sea | - |
| (adjective) of or relating to military personnel who serve both on land and at sea (specifically the U.S. Marine Corps) | - |
| (adjective) relating to or involving ships or shipping or navigation or seamen | Synonyms: maritime, nautical |
| (adjective) native to or inhabiting the sea | - |
| (noun) a soldier who serves both on shipboard and on land | - |
| marline | (noun) a small usually tarred line of 2 strands | - |
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| masculine | (adjective) associated with men and not with women | - |
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| (adjective) male (of grammatical gender) | - |
| (adjective) (music or poetry) ending on an accented beat or syllable | - |
| (noun) a gender that refers chiefly (but not exclusively) to males or to objects classified as male | - |
| meclizine | (noun) an antihistamine (trade name Antivert) used to treat or prevent motion sickness | Synonyms: Antivert, meclizine hydrochloride |
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| medicine | (noun) the learned profession that is mastered by graduate training in a medical school and that is devoted to preventing or alleviating or curing diseases and injuries | Synonyms: practice of medicine |
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| (noun) punishment for one's actions | Synonyms: music |
| (noun) (medicine) something that treats or prevents or alleviates the symptoms of disease | Synonyms: medicament, medication, medicinal drug |
| (noun) the branches of medical science that deal with nonsurgical techniques | Synonyms: medical specialty |
| (verb) treat medicinally, treat with medicine | Synonyms: medicate |
| mefloquine | (noun) an antimalarial drug (trade name Lariam and Mephaquine) that is effective in cases that do not respond to chloroquine; said to produce harmful neuropsychiatric effects on some people | Synonyms: Lariam, mefloquine hydrochloride, Mephaquine |
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| melamine | (noun) a white crystalline organic base; used mainly in making melamine resins | Synonyms: cyanuramide |
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| mepacrine | (noun) a drug (trade name Atabrine) used to treat certain worm infestations and once used to treat malaria | Synonyms: Atabrine, quinacrine, quinacrine hydrochloride |
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| meperidine | (noun) a synthetic narcotic drug (trade name Demerol) used to treat pain | Synonyms: Demerol, meperidine hydrochloride |
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| merbromine | (noun) a mercurial compound applied topically as an antiseptic; Mercurochrome is the trademark | Synonyms: Mercurochrome |
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| mercaptopurine | (noun) a drug (trade name Purinethol) that interferes with the metabolism of purine and is used to treat acute lymphocytic leukemia | Synonyms: Purinethol |
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| mescaline | (noun) the hallucinatory alkaloid that is the active agent in mescal buttons | Synonyms: peyote |
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| methacholine | (noun) parasympathomimetic drug (trademark Mecholyl) that stimulates secretions and smooth muscle activity | Synonyms: Mecholyl |
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| methamphetamine | (noun) an amphetamine derivative (trade name Methedrine) used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant | Synonyms: chalk, chicken feed, crank, deoxyephedrine, glass, ice, meth, methamphetamine hydrochloride, Methedrine, shabu, trash |
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| methenamine | (noun) antibacterial agent (trade names Mandelamine and Urex) that is contained in many products that are used to treat urinary infections | Synonyms: Mandelamine, Urex |
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| methionine | (noun) a crystalline amino acid containing sulfur; found in most proteins and essential for nutrition | - |
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| methylenedioxymethamphetamine | (noun) a stimulant drug that is chemically related to mescaline and amphetamine and is used illicitly for its euphoric and hallucinogenic effects; it was formerly used in psychotherapy but in 1985 it was declared illegal in the United States | Synonyms: MDMA |
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| mexiletine | (noun) antiarrhythmic drug (trade name Mexitil) used to treat ventricular arrhythmias | Synonyms: Mexitil |
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| mezzanine | (noun) intermediate floor just above the ground floor | Synonyms: entresol, mezzanine floor |
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| (noun) first or lowest balcony | Synonyms: first balcony |
| microcrystalline | (adjective) containing crystals that are visible only under a microscope | - |
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| midline | (noun) the median plane of the body (or some part of the body) | Synonyms: midplane |
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| migraine | (noun) a severe recurring vascular headache; occurs more frequently in women than men | Synonyms: hemicrania, megrim, sick headache |
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| milline | (noun) an advertising measure; one agate line appearing in one million copies of a publication | - |
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| mine | (noun) explosive device that explodes on contact; designed to destroy vehicles or ships or to kill or maim personnel | - |
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| (noun) excavation in the earth from which ores and minerals are extracted | - |
| (verb) lay mines | - |
| (verb) get from the earth by excavation | - |
| minisubmarine | (noun) submersible vessel for one or two persons; for naval operations or underwater exploration | Synonyms: minisub |
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| minocycline | (noun) tetracycline antibiotic (trade name Minocin) used to treat a variety of bacterial and rickettsial infections | Synonyms: Minocin |
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| monoamine | (noun) a molecule containing one amine group (especially one that is a neurotransmitter) | - |
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| monocline | (noun) a geological formation in which all strata are inclined in the same direction | - |
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| moonshine | (noun) whiskey illegally distilled from a corn mash | Synonyms: bootleg, corn liquor |
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| (noun) the light of the Moon | Synonyms: Moon, moonlight |
| (verb) distill (alcohol) illegally; produce moonshine | - |
| moraine | (noun) accumulated earth and stones deposited by a glacier | - |
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| morphine | (noun) an alkaloid narcotic drug extracted from opium; a powerful, habit-forming narcotic used to relieve pain | Synonyms: morphia |
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| murine | (adjective) of or relating to or transmitted by a member of the family Muridae (rats and mice) | - |
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| (noun) a rodent that is a member of the family Muridae | - |
| muscadine | (noun) dull-purple grape of southern United States | Synonyms: bullace grape |
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| (noun) native grape of southeastern United States; origin of many cultivated varieties | Synonyms: Vitis rotundifolia |
| musteline | (noun) fissiped fur-bearing carnivorous mammals | Synonyms: mustelid, musteline mammal |
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| myeline | (noun) a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers | Synonyms: medulla, myelin |
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| nalorphine | (noun) a narcotic antagonist (trade name Nalline) that counteracts the effects of narcotics (especially the effects of poisoning by morphine) | Synonyms: Nalline |
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| nanomachine | (noun) a machine of the size of close to one nanometre | - |
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| naphazoline | (noun) vasoconstrictor (trade names Privine and Sudafed) used in nasal sprays to treat symptoms of nasal congestion and in eyedrops to treat eye irritation | Synonyms: Privine, Sudafed |
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| neckline | (noun) the line formed by the edge of a garment around the neck | - |
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| nectarine | (noun) a variety or mutation of the peach that has a smooth skin | - |
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| (noun) variety or mutation of the peach bearing fruit with smooth skin and (usually) yellow flesh | Synonyms: nectarine tree, Prunus persica nectarina |
| nemertine | (noun) soft unsegmented marine worms that have a threadlike proboscis and the ability to stretch and contract | Synonyms: nemertean, proboscis worm, ribbon worm |
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| neostigmine | (noun) a cholinergic drug (trade name Prostigmin) used to treat some ophthalmic conditions and to treat myasthenia gravis | Synonyms: Prostigmin |
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| nepheline | (noun) a whitish mineral consisting of sodium aluminum silicate or potassium aluminum silicate in crystalline form; used in the manufacture of ceramics and enamels | Synonyms: nephelite |
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| neuroendocrine | (adjective) of or relating to the nervous and endocrine systems (especially as they function together) | - |
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| nevirapine | (noun) a non-nucleoside reverse transcriptase inhibitor (trade name Viramune) used to treat AIDS and HIV | Synonyms: Viramune |
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| nicotine | (noun) an alkaloid poison that occurs in tobacco; used in medicine and as an insecticide | - |
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| nifedipine | (noun) calcium blocker (trade name Procardia); appears to increase the risk of recurrent heart attacks | Synonyms: Procardia |
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| nine | (adjective) denoting a quantity consisting of one more than eight and one less than ten | Synonyms: 9, ix |
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| (noun) one of four playing cards in a deck with nine pips on the face | Synonyms: nine-spot |
| (noun) a team of professional baseball players who play and travel together | Synonyms: ball club, baseball club, club |
| (noun) the cardinal number that is the sum of eight and one | Synonyms: 9, ennead, IX, Nina from Carolina, niner |
| nitramine | (noun) a yellow crystalline explosive solid that is used in detonators | Synonyms: tetryl |
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| nitroglycerine | (noun) a heavy yellow poisonous oily explosive liquid obtained by nitrating glycerol; used in making explosives and medically as a vasodilator (trade names Nitrospan and Nitrostat) | Synonyms: glyceryl trinitrate, nitroglycerin, Nitrospan, Nitrostat, trinitroglycerin |
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| noncrystalline | (adjective) not crystalline | - |
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| nonpasserine | (adjective) relating to or characteristic of birds that are not perching birds | - |
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| noradrenaline | (noun) a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses | Synonyms: norepinephrine |
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| norepinephrine | (noun) a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses | Synonyms: noradrenaline |
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| nortriptyline | (noun) a tricyclic antidepressant drug (trade name Pamelor) used along with psychotherapy to treat dysthymic depression; may interact dangerously if taken with other drugs | Synonyms: Pamelor |
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| novocaine | (noun) procaine administered as a hydrochloride (trade name Novocain) | Synonyms: Novocain, procaine hydrochloride |
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| oldline | (adjective) long-established | Synonyms: old-line |
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| (adjective) adhering to conservative or reactionary principles | Synonyms: old-line |
| olefine | (noun) any unsaturated aliphatic hydrocarbon | Synonyms: alkene, olefin |
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| oleomargarine | (noun) a spread made chiefly from vegetable oils and used as a substitute for butter | Synonyms: margarin, margarine, marge, oleo |
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| olivine | (noun) a mineral consisting of magnesium iron silicate; a source of magnesium | - |
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| online | (adjective) connected to a computer network or accessible by computer | Synonyms: on-line |
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| (adjective) on a regular route of a railroad or bus or airline system | Synonyms: on-line |
| (adjective) being in progress now | Synonyms: on-line |
| opaline | (adjective) having a play of lustrous rainbow colors | Synonyms: iridescent, nacreous, opalescent, pearlescent |
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| opine | (verb) expect, believe, or suppose | Synonyms: guess, imagine, reckon, suppose, think |
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| (verb) express one's opinion openly and without fear or hesitation | Synonyms: animadvert, sound off, speak out, speak up |
| ornithine | (noun) an amino acid that does not occur in proteins but is important in the formation of urea | - |
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| orphenadrine | (noun) a skeletal muscle relaxant (trade name Norflex) used to treat severe muscle strain and Parkinsonism | Synonyms: Norflex |
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| orpine | (noun) perennial northern temperate plant with toothed leaves and heads of small purplish-white flowers | Synonyms: live-forever, livelong, orpin, Sedum telephium |
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| oscine | (adjective) of or relating to the songbirds | - |
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| (noun) passerine bird having specialized vocal apparatus | Synonyms: oscine bird |
| outline | (noun) a schematic or preliminary plan | Synonyms: schema, scheme |
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| (noun) a sketchy summary of the main points of an argument or theory | Synonyms: abstract, precis, synopsis |
| (noun) the line that appears to bound an object | Synonyms: lineation |
| (verb) describe roughly or briefly or give the main points or summary of | Synonyms: adumbrate, sketch |
| (verb) trace the shape of | Synonyms: delineate, limn |
| (verb) draw up an outline or sketch for something | Synonyms: draft |
| outshine | (verb) attract more attention and praise than others | - |
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| (verb) shine brighter than | - |
| overrefine | (verb) refine too much or with excess of subtlety | Synonyms: over-refine |
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| ovine | (adjective) of or pertaining to or of the nature of or characteristic of a sheep or sheep | - |
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| oxyphencyclimine | (noun) an anticholinergic drug (trade name Daricon) used in treating peptic ulcers | Synonyms: Daricon |
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| oxytetracycline | (noun) a yellow crystalline antibiotic (trademark Terramycin) obtained from a soil actinomycete; used to treat various bacterial and rickettsial infections | Synonyms: hydroxytetracycline, oxytetracycline hydrochloride, Terramycin |
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| palatine | (adjective) of or relating to a palace | - |
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| (adjective) of or relating to a count palatine and his royal prerogatives | - |
| (adjective) relating to or lying near the palate | Synonyms: palatal |
| (noun) either of two irregularly shaped bones that form the back of the hard palate and helps to form the nasal cavity and the floor of the orbits | Synonyms: os palatinum, palatine bone |
| (noun) (Middle Ages) the lord of a palatinate who exercised sovereign powers over his lands | Synonyms: palsgrave |
| (noun) any of various important officials in ancient Rome | - |
| papaverine | (noun) an alkaloid medicine (trade name Kavrin) obtained from opium; used to relax smooth muscles; it is nonaddictive | Synonyms: Kavrin |
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| paroxetine | (noun) a selective-serotonin reuptake inhibitor commonly prescribed as an antidepressant (trade name Paxil) | Synonyms: Paxil |
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| passerine | (adjective) relating to or characteristic of the passeriform birds | - |
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| (noun) perching birds mostly small and living near the ground with feet having 4 toes arranged to allow for gripping the perch; most are songbirds; hatchlings are helpless | Synonyms: passeriform bird |
| penicillamine | (noun) a drug (trade name Cuprimine) used to treat heavy metal poisoning and Wilson's disease and severe arthritis | Synonyms: Cuprimine |
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| pentazocine | (noun) analgesic drug (trade name Talwin) that is less addictive than morphine | Synonyms: Talwin |
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