| litre | (noun) a metric unit of capacity, formerly defined as the volume of one kilogram of pure water under standard conditions; now equal to 1,000 cubic centimeters (or approximately 1.75 pints) | Synonyms: cubic decimeter, cubic decimetre, l, liter |
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| lore | (noun) knowledge gained through tradition or anecdote | Synonyms: traditional knowledge |
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| louvre | (noun) one of a set of parallel slats in a door or window to admit air and reject rain | Synonyms: fin, louver |
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| lucre | (noun) the excess of revenues over outlays in a given period of time (including depreciation and other non-cash expenses) | Synonyms: earnings, net, net income, net profit, profit, profits |
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| (noun) informal terms for money | Synonyms: boodle, bread, cabbage, clams, dinero, dough, gelt, kale, lettuce, lolly, loot, moolah, pelf, scratch, shekels, simoleons, sugar, wampum |
| luminaire | (noun) an electrical device used to create artificial light by use of an electric lamp; all light fixtures have a fixture body and a light socket to hold the lamp and allow for its replacement | Synonyms: light fitting, light fixture |
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| lure | (noun) something used to lure fish or other animals into danger so they can be trapped or killed | Synonyms: bait, decoy |
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| (noun) qualities that attract by seeming to promise some kind of reward | Synonyms: come-on, enticement |
| (noun) anything that serves as an enticement | Synonyms: bait, come-on, hook, sweetener |
| lusterware | (noun) pottery with a metallic sheen produced by adding metallic oxides to the glaze | - |
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| lustre | (noun) a surface coating for ceramics or porcelain | Synonyms: luster |
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| (noun) a quality that outshines the usual | Synonyms: brilliancy, luster, splendor, splendour |
| (noun) the visual property of something that shines with reflected light | Synonyms: luster, sheen, shininess |
| lyre | (noun) a harp used by ancient Greeks for accompaniment | - |
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| macrospore | (noun) larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophyte | Synonyms: megaspore |
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| madrepore | (noun) corals having calcareous skeletons aggregations of which form reefs and islands | Synonyms: madriporian coral, stony coral |
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| magistrature | (noun) the position of magistrate | Synonyms: magistracy |
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| magnetosphere | (noun) the magnetic field of a planet; the volume around the planet in which charged particles are subject more to the planet's magnetic field than to the solar magnetic field | - |
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| maigre | (noun) large European marine food fish | Synonyms: maiger, Sciaena aquila |
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| malware | (noun) malicious software, designed to break into a system | - |
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| manicure | (noun) professional care for the hands and fingernails | - |
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| manoeuvre | (noun) a move made to gain a tactical end | Synonyms: maneuver, tactical maneuver, tactical manoeuvre |
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| (noun) an action aimed at evading an opponent | Synonyms: evasive action, maneuver |
| (noun) a military training exercise | Synonyms: maneuver, simulated military operation |
| (noun) a deliberate coordinated movement requiring dexterity and skill | Synonyms: maneuver, play |
| (noun) a plan for attaining a particular goal | Synonyms: maneuver, tactic, tactics |
| manticore | (noun) a mythical monster having the head of man (with horns) and the body of a lion and the tail of a scorpion | Synonyms: mantichora, manticora, mantiger |
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| manufacture | (noun) the organized action of making of goods and services for sale | Synonyms: industry |
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| (noun) the act of making something (a product) from raw materials | Synonyms: fabrication, manufacturing |
| manure | (noun) any animal or plant material used to fertilize land especially animal excreta usually with litter material | - |
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| mare | (noun) female equine animal | Synonyms: female horse |
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| (noun) a dark region of considerable extent on the surface of the moon | Synonyms: maria |
| massacre | (noun) the savage and excessive killing of many people | Synonyms: butchery, carnage, mass murder, slaughter |
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| mastigophore | (noun) a usually nonphotosynthetic free-living protozoan with whiplike appendages; some are pathogens of humans and other animals | Synonyms: flagellate, flagellate protozoan, flagellated protozoan, mastigophoran |
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| measure | (noun) how much there is or how many there are of something that you can quantify | Synonyms: amount, quantity |
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| (noun) the act or process of assigning numbers to phenomena according to a rule | Synonyms: measurement, measuring, mensuration |
| (noun) any maneuver made as part of progress toward a goal | Synonyms: step |
| (noun) measuring instrument having a sequence of marks at regular intervals; used as a reference in making measurements | Synonyms: measuring rod, measuring stick |
| (noun) a container of some standard capacity that is used to obtain fixed amounts of a substance | - |
| (noun) musical notation for a repeating pattern of musical beats | Synonyms: bar |
| (noun) (prosody) the accent in a metrical foot of verse | Synonyms: beat, cadence, meter, metre |
| (noun) a statute in draft before it becomes law | Synonyms: bill |
| (noun) a basis for comparison; a reference point against which other things can be evaluated | Synonyms: criterion, standard, touchstone |
| megaspore | (noun) larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophyte | Synonyms: macrospore |
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| megathere | (noun) gigantic extinct terrestrial sloth-like mammal of the Pliocene and Pleistocene in America | Synonyms: ground sloth |
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| mere | (noun) a small pond of standing water | - |
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| mesosphere | (noun) the atmospheric layer between the stratosphere and the thermosphere | - |
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| metacentre | (noun) (shipbuilding) the point of intersection between two vertical lines, one line through the center of buoyancy of the hull of a ship in equilibrium and the other line through the center of buoyancy of the hull when the ship is inclined to one side; the distance of this intersection above the center of gravity is an indication of the stability of the ship | Synonyms: metacenter |
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| metalware | (noun) household articles made of metal (especially for use at table) | - |
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| metamere | (noun) one of a series of similar body segments into which some animals are divided longitudinally | Synonyms: somite |
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| metre | (noun) rhythm as given by division into parts of equal duration | Synonyms: meter, time |
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| (noun) (prosody) the accent in a metrical foot of verse | Synonyms: beat, cadence, measure, meter |
| (noun) the basic unit of length adopted under the Systeme International d'Unites (approximately 1.094 yards) | Synonyms: m, meter |
| micrometre | (noun) a metric unit of length equal to one millionth of a meter | Synonyms: micrometer, micron |
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| micromillimetre | (noun) a metric unit of length equal to one billionth of a meter | Synonyms: micromillimeter, millimicron, nanometer, nanometre, nm |
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| microspore | (noun) smaller of the two types of spore produced in heterosporous plants; develops in the pollen sac into a male gametophyte | - |
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| milliampere | (noun) one thousandth of an ampere | Synonyms: mA |
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| millilitre | (noun) a metric unit of volume equal to one thousandth of a liter | Synonyms: cc, cubic centimeter, cubic centimetre, mil, milliliter, ml |
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| millimetre | (noun) a metric unit of length equal to one thousandth of a meter | Synonyms: millimeter, mm |
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| millionaire | (noun) a person whose material wealth is valued at more than a million dollars | - |
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| miniature | (noun) a copy that reproduces a person or thing in greatly reduced size | Synonyms: toy |
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| (noun) painting or drawing included in a book (especially in illuminated medieval manuscripts) | Synonyms: illumination |
| mire | (noun) a soft wet area of low-lying land that sinks underfoot | Synonyms: morass, quag, quagmire, slack |
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| (noun) a difficulty or embarrassment that is hard to extricate yourself from | - |
| (noun) deep soft mud in water or slush | Synonyms: slop |
| misadventure | (noun) an instance of misfortune | Synonyms: mischance, mishap |
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| misfire | (noun) an explosion that fails to occur | Synonyms: dud |
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| (noun) a failure to hit (or meet or find etc) | Synonyms: miss |
| mitre | (noun) a liturgical headdress worn by bishops on formal occasions | Synonyms: miter |
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| (noun) the surface of a beveled end of a piece where a miter joint is made | Synonyms: miter |
| (noun) joint that forms a corner; usually both sides are bevelled at a 45-degree angle to form a 90-degree corner | Synonyms: miter, miter joint, mitre joint |
| mixture | (noun) the act of mixing together | Synonyms: admixture, commixture, intermixture, mix, mixing |
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| (noun) an event that combines things in a mixture | Synonyms: mix |
| (noun) any foodstuff made by combining different ingredients | Synonyms: concoction, intermixture |
| (noun) a collection containing a variety of sorts of things | Synonyms: assortment, miscellanea, miscellany, mixed bag, motley, potpourri, salmagundi, smorgasbord, variety |
| (noun) (chemistry) a substance consisting of two or more substances mixed together (not in fixed proportions and not with chemical bonding) | - |
| moire | (noun) silk fabric with a wavy surface pattern | Synonyms: watered-silk |
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| moisture | (noun) wetness caused by water | Synonyms: wet |
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| monoculture | (noun) the cultivation of a single crop (on a farm or area or country) | - |
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| murre | (noun) black-and-white diving bird of northern seas | - |
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| musculature | (noun) the muscular system of an organism | Synonyms: muscle system, muscular structure |
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| myriametre | (noun) a metric unit of length equal to 10,000 meters | Synonyms: mym, myriameter |
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| nacre | (noun) the iridescent internal layer of a mollusk shell | Synonyms: mother-of-pearl |
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| nanometre | (noun) a metric unit of length equal to one billionth of a meter | Synonyms: micromillimeter, micromillimetre, millimicron, nanometer, nm |
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| nature | (noun) the complex of emotional and intellectual attributes that determine a person's characteristic actions and reactions | - |
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| (noun) the essential qualities or characteristics by which something is recognized | - |
| (noun) a particular type of thing | - |
| (noun) the natural physical world including plants and animals and landscapes etc. | - |
| (noun) a causal agent creating and controlling things in the universe | - |
| nervure | (noun) one of the horny ribs that stiffen and support the wing of an insect | Synonyms: vein |
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| (noun) any of the vascular bundles or ribs that form the branching framework of conducting and supporting tissues in a leaf or other plant organ | Synonyms: vein |
| nightmare | (noun) a terrifying or deeply upsetting dream | - |
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| (noun) a situation resembling a terrifying dream | Synonyms: incubus |
| nitre | (noun) (KNO3) used especially as a fertilizer and explosive | Synonyms: niter, potassium nitrate, saltpeter, saltpetre |
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| nomenclature | (noun) a system of words used to name things in a particular discipline | Synonyms: language, terminology |
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| nowhere | (noun) an insignificant place | - |
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| nurture | (noun) helping someone grow up to be an accepted member of the community | Synonyms: breeding, bringing up, fosterage, fostering, raising, rearing, upbringing |
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| (noun) the properties acquired as a consequence of the way you were treated as a child | Synonyms: raising, rearing |
| ochre | (noun) a moderate yellow-orange to orange color | Synonyms: ocher |
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| (noun) any of various earths containing silica and alumina and ferric oxide; used as a pigment | Synonyms: ocher |
| oeuvre | (noun) the total output of a writer or artist (or a substantial part of it) | Synonyms: body of work, work |
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| ogre | (noun) (folklore) a giant who likes to eat human beings | - |
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| (noun) a cruel wicked and inhuman person | Synonyms: demon, devil, fiend, monster |
| omnivore | (noun) an animal that feeds on both animal and vegetable substances | - |
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| (noun) a person who eats all kinds of foods | - |
| oosphere | (noun) a gamete; used especially of lower plants | - |
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| oospore | (noun) a thick-walled sexual spore that develops from a fertilized oosphere in some algae and fungi | - |
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| ordure | (noun) solid excretory product evacuated from the bowels | Synonyms: BM, dejection, faecal matter, faeces, fecal matter, feces, stool |
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| ore | (noun) a monetary subunit in Denmark and Norway and Sweden; 100 ore equal 1 krona | - |
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| (noun) a mineral that contains metal that is valuable enough to be mined | - |
| orthodonture | (noun) the branch of dentistry dealing with the prevention or correction of irregularities of the teeth | Synonyms: dental orthopaedics, dental orthopedics, orthodontia, orthodontics |
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| ovenware | (noun) heat-resistant dishware in which food can be cooked as well as served | - |
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| overexposure | (noun) the act of exposing film to too much light or for too long a time | - |
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| (noun) the act of exposing someone excessively to an influencing experience | - |
| overpressure | (noun) a transient air pressure greater than the surrounding atmospheric pressure | - |
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| overture | (noun) a tentative suggestion designed to elicit the reactions of others | Synonyms: advance, approach, feeler |
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| (noun) orchestral music played at the beginning of an opera or oratorio | - |
| (noun) something that serves as a preceding event or introduces what follows | Synonyms: preliminary, prelude |
| ozonosphere | (noun) a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun | Synonyms: ozone layer |
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| padre | (noun) a chaplain in one of the military services | Synonyms: Holy Joe, military chaplain, sky pilot |
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| palmature | (noun) an abnormality in which the fingers are webbed | - |
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| parterre | (noun) seating at the rear of the main floor (beneath the balconies) | Synonyms: parquet circle |
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| (noun) an ornamental flower garden; beds and paths are arranged to form a pattern | - |
| pasture | (noun) bulky food like grass or hay for browsing or grazing horses or cattle | Synonyms: eatage, forage, grass, pasturage |
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| (noun) a field covered with grass or herbage and suitable for grazing by livestock | Synonyms: grazing land, lea, ley, pasture land, pastureland |
| pedicure | (noun) professional care for the feet and toenails | - |
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| peradventure | (noun) doubt or uncertainty as to whether something is the case | - |
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| philtre | (noun) a drink credited with magical power; can make the one who takes it love the one who gave it | Synonyms: love-philter, love-philtre, love-potion, philter |
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| photogravure | (noun) using photography to produce a plate for printing | Synonyms: rotogravure |
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| (noun) an intaglio print produced by gravure | Synonyms: gravure, heliogravure |
| (noun) printing from an intaglio plate prepared by photographic methods | - |
| photosphere | (noun) the intensely luminous surface of a star (especially the sun) | - |
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| piastre | (noun) a fractional monetary unit in Egypt and Lebanon and Sudan and Syria | Synonyms: piaster |
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| (noun) 100 kurus equal 1 lira in Turkey | Synonyms: kurus, piaster |
| picometre | (noun) a metric unit of length equal to one trillionth of a meter | Synonyms: micromicron, picometer |
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| picture | (noun) a visual representation (of an object or scene or person or abstraction) produced on a surface | Synonyms: icon, ikon, image |
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| (noun) graphic art consisting of an artistic composition made by applying paints to a surface | Synonyms: painting |
| (noun) a representation of a person or scene in the form of a print or transparent slide or in digital format | Synonyms: exposure, photo, photograph, pic |
| (noun) a clear and telling mental image | Synonyms: impression, mental picture |
| (noun) a typical example of some state or quality | - |
| (noun) illustrations used to decorate or explain a text | Synonyms: pictorial matter |
| (noun) the visible part of a television transmission | Synonyms: video |
| (noun) a form of entertainment that enacts a story by sound and a sequence of images giving the illusion of continuous movement | Synonyms: film, flick, motion-picture show, motion picture, movie, moving-picture show, moving picture, pic, picture show |
| (noun) a graphic or vivid verbal description | Synonyms: characterisation, characterization, delineation, depiction, word-painting, word picture |
| (noun) a situation treated as an observable object | Synonyms: scene |
| pinafore | (noun) a sleeveless dress resembling an apron; worn over other clothing | Synonyms: jumper, pinny |
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| pismire | (noun) social insect living in organized colonies; characteristically the males and fertile queen have wings during breeding season; wingless sterile females are the workers | Synonyms: ant, emmet |
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| pleasure | (noun) sexual gratification | - |
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| (noun) an activity that affords enjoyment | - |
| (noun) something or someone that provides a source of happiness | Synonyms: delight, joy |
| (noun) a formal expression | - |
| (noun) a fundamental feeling that is hard to define but that people desire to experience | Synonyms: pleasance |
| ploughshare | (noun) a sharp steel wedge that cuts loose the top layer of soil | Synonyms: plowshare, share |
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| plowshare | (noun) a sharp steel wedge that cuts loose the top layer of soil | Synonyms: ploughshare, share |
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| pneumatophore | (noun) an air-filled root (submerged or exposed) that can function as a respiratory organ of a marsh or swamp plant | - |
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| polyplacophore | (noun) primitive elongated bilaterally symmetrical marine mollusk having a mantle covered with eight calcareous plates | Synonyms: chiton, coat-of-mail shell, sea cradle |
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| polypore | (noun) woody pore fungi; any fungus of the family Polyporaceae or family Boletaceae having the spore-bearing surface within tubes or pores; the fruiting bodies are usually woody at maturity and persistent | Synonyms: pore fungus, pore mushroom |
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| pore | (noun) any small opening in the skin or outer surface of an animal | - |
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| (noun) a minute epidermal pore in a leaf or stem through which gases and water vapor can pass | Synonyms: stoma, stomate |
| (noun) any tiny hole admitting passage of a liquid (fluid or gas) | - |
| portiere | (noun) a heavy curtain hung across a doorway | - |
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| portraiture | (noun) the activity of making portraits | - |
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| (noun) a word picture of a person's appearance and character | Synonyms: portrait, portrayal |
| posture | (noun) the arrangement of the body and its limbs | Synonyms: attitude, position |
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| (noun) characteristic way of bearing one's body | Synonyms: bearing, carriage |
| (noun) capability in terms of personnel and materiel that affect the capacity to fight a war | Synonyms: military capability, military posture, military strength, strength |
| (noun) a rationalized mental attitude | Synonyms: position, stance |
| pourboire | (noun) a relatively small amount of money given for services rendered (as by a waiter) | Synonyms: backsheesh, baksheesh, bakshis, bakshish, gratuity, tip |
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| prefecture | (noun) the office of prefect | - |
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| (noun) the district administered by a prefect (as in France or Japan or the Roman Empire) | - |