| headline | (noun) the heading or caption of a newspaper article | Synonyms: newspaper headline |
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| helleborine | (noun) any of several orchids of the genus Cephalanthera | - |
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| (noun) any of various orchids of the genus Epipactis | - |
| (noun) any of several small temperate and tropical orchids having mottled or striped leaves and spikes of small yellowish-white flowers in a twisted raceme | Synonyms: rattlesnake plantain |
| hemline | (noun) the line formed by the lower edge of a skirt or coat | - |
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| heroine | (noun) a woman possessing heroic qualities or a woman who has performed heroic deeds | - |
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| (noun) the main good female character in a work of fiction | - |
| hexine | (noun) a hydrocarbon, C6H10, of the acetylene series. | - |
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| hipline | (noun) the line formed by the lower edge of hip-length garment | - |
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| (noun) the line formed by measuring the hip at its greatest part | - |
| histamine | (noun) amine formed from histidine that stimulates gastric secretions and dilates blood vessels; released by the human immune system during allergic reactions | - |
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| histidine | (noun) an essential amino acid found in proteins that is important for the growth and repair of tissue | - |
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| hotline | (noun) a telefone line that provides direct and prompt information or advice to the caller in relation to a specific subject | Synonyms: hot line |
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| hyaline | (noun) a glassy translucent substance that occurs in hyaline cartilage or in certain skin conditions | Synonyms: hyalin |
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| hydralazine | (noun) an antihypertensive drug (trade name Apresoline) that dilates blood vessels; used (often with a diuretic) to treat hypertension and congestive heart failure | Synonyms: Apresoline |
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| hydrazine | (noun) a colorless fuming corrosive liquid; a powerful reducing agent; used chiefly in rocket fuels | - |
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| hydroxychloroquine | (noun) anti-inflammatory drug (trade name Plaquenil) used in the treatment of rheumatoid arthritis and malaria and lupus erythematosus | Synonyms: Plaquenil |
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| hydroxyproline | (noun) a crystalline amino acid obtained from gelatin or collagen | - |
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| hydroxytetracycline | (noun) a yellow crystalline antibiotic (trademark Terramycin) obtained from a soil actinomycete; used to treat various bacterial and rickettsial infections | Synonyms: oxytetracycline, oxytetracycline hydrochloride, Terramycin |
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| hydroxyzine | (noun) a drug (trade names Atarax and Vistaril) used as a tranquilizer to treat anxiety and motion sickness | Synonyms: Atarax, hydroxyzine hydrochloride, Vistaril |
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| hyoscine | (noun) an alkaloid with anticholinergic effects that is used as a sedative and to treat nausea and to dilate the pupils in ophthalmic procedures | Synonyms: scopolamine |
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| hyoscyamine | (noun) a poisonous crystalline alkaloid (isometric with atropine but more potent); used to treat excess motility of the gastrointestinal tract | - |
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| imipramine | (noun) a tricyclic antidepressant (trade names Imavate and Tofranil) used to treat clinical depression | Synonyms: Imavate, impramine hydrochloride, Tofranil |
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| incline | (noun) an inclined surface connecting two levels | Synonyms: ramp |
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| (noun) an elevated geological formation | Synonyms: side, slope |
| indiscipline | (noun) the trait of lacking discipline | Synonyms: undiscipline |
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| inosine | (noun) a nucleoside that is formed by the deamination of adenosine; used in kidney transplantation to provide a temporary source of sugar | - |
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| intestine | (noun) the part of the alimentary canal between the stomach and the anus | Synonyms: bowel, gut |
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| iodine | (noun) a tincture consisting of a solution of iodine in ethyl alcohol; applied topically to wounds as an antiseptic | Synonyms: tincture of iodine |
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| (noun) a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks) | Synonyms: atomic number 53, I, iodin |
| iodothyronine | (noun) thyronine with iodine added | - |
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| iodotyrosine | (noun) tyrosine with iodine added | - |
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| iridosmine | (noun) a hard and corrosion resistant mineral that is a natural alloy of osmium and iridium (usually containing small amounts of rhodium and platinum); used in needles and pen nibs etc. | Synonyms: osmiridium |
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| isoleucine | (noun) an essential amino acid found in proteins; isomeric with leucine | - |
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| jasmine | (noun) any of several shrubs and vines of the genus Jasminum chiefly native to Asia | - |
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| jessamine | (noun) a climbing deciduous shrub with fragrant white or yellow or red flowers used in perfume and to flavor tea | Synonyms: common jasmine, Jasminum officinale, true jasmine |
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| kaoline | (noun) a fine usually white clay formed by the weathering of aluminous minerals (as feldspar); used in ceramics and as an absorbent and as a filler (e.g., in paper) | Synonyms: china clay, china stone, kaolin, porcelain clay, terra alba |
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| kerosine | (noun) a flammable hydrocarbon oil used as fuel in lamps and heaters | Synonyms: coal oil, kerosene, lamp oil |
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| ketamine | (noun) a general anesthetic and tranquilizer (not a barbiturate) that is administered intravenously or intramuscularly; used mainly by veterinarians or for minor surgery with geriatric or pediatric patients; taken in large doses it causes hallucinations similar to those associated with the use of PCP | Synonyms: Ketalar, ketamine hydrochloride |
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| kine | (noun) domesticated bovine animals as a group regardless of sex or age | Synonyms: Bos taurus, cattle, cows, oxen |
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| koine | (noun) a common language used by speakers of different languages | Synonyms: interlanguage, lingua franca |
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| lamivudine | (noun) a nucleoside reverse transcriptase inhibitor that is very effective in combination with zidovudine in treating AIDS and HIV | Synonyms: 3TC |
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| landline | (noun) a telephone line that travels over terrestrial circuits | Synonyms: land line |
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| langoustine | (noun) caught in European waters; slenderer than American lobster | Synonyms: Norwegian lobster, scampo |
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| latrine | (noun) a public toilet in a military area | - |
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| lazuline | (noun) a light shade of blue | Synonyms: azure, cerulean, sapphire, sky-blue |
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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 | (noun) a dissolute person; usually a man who is morally unrestrained | Synonyms: debauchee, rounder |
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| 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 |
| 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 |
| 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 | (noun) any plant of the genus Lupinus; bearing erect spikes of usually purplish-blue flowers | Synonyms: lupin |
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| 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 | - |
| 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 |
| 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 | (noun) a soldier who serves both on shipboard and on land | - |
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| marline | (noun) a small usually tarred line of 2 strands | - |
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| masculine | (noun) a gender that refers chiefly (but not exclusively) to males or to objects classified as male | - |
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| 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 |
| 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 |
| 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 | - |
| 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 |
| 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 | (noun) a rodent that is a member of the family Muridae | - |
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| 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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| 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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