| martagon | (noun) lily with small dull purple flowers of northwestern Europe and northwestern Asia | Synonyms: Lilium martagon, Turk's-cap |
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| marten | (noun) agile slender-bodied arboreal mustelids somewhat larger than weasels | Synonyms: marten cat |
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| martensite | (noun) a solid solution of carbon in alpha-iron that is formed when steel is cooled so rapidly that the change from austenite to pearlite is suppressed; responsible for the hardness of quenched steel | - |
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| martin | (noun) any of various swallows with squarish or slightly forked tail and long pointed wings; migrate around Martinmas | - |
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| martinet | (noun) someone who demands exact conformity to rules and forms | Synonyms: disciplinarian, moralist |
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| martingale | (noun) a harness strap that connects the nose piece to the girth; prevents the horse from throwing back its head | - |
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| (noun) spar under the bowsprit of a sailboat | Synonyms: dolphin striker |
| martini | (noun) a cocktail made of gin (or vodka) with dry vermouth | - |
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| martynia | (noun) sprawling annual or perennial herb of Central America and West Indies having creamy-white to red-purple bell-shaped flowers followed by unusual horned fruit | Synonyms: Martynia annua |
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| martyr | (noun) one who suffers for the sake of principle | Synonyms: sufferer |
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| (noun) one who voluntarily suffers death as the penalty for refusing to renounce their religion | - |
| martyrdom | (noun) death that is imposed because of the person's adherence of a religious faith or cause | - |
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| (noun) any experience that causes intense suffering | Synonyms: calvary |
| mouthpart | (noun) any part of the mouth of an insect or other arthropod especially one adapted to a specific way of feeding | - |
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| narthex | (noun) a vestibule leading to the nave of a church | - |
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| (noun) portico at the west end of an early Christian basilica or church | - |
| nonparticipant | (noun) a person who does not participate | - |
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| nonparticipation | (noun) withdrawing from the activities of a group | Synonyms: non-engagement, non-involvement |
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| nonpartisan | (noun) a person who is nonpartisan | Synonyms: nonpartizan |
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| nonpartisanship | (noun) an inclination to weigh both views or opinions equally | Synonyms: impartiality |
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| nonpartizan | (noun) a person who is nonpartisan | Synonyms: nonpartisan |
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| nonstarter | (noun) a horse that fails to run in a race for which it has been entered | - |
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| (noun) a person with a record of failing; someone who loses consistently | Synonyms: failure, loser, unsuccessful person |
| osteoarthritis | (noun) chronic breakdown of cartilage in the joints; the most common form of arthritis occurring usually after middle age | Synonyms: degenerative arthritis, degenerative joint disease |
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| oxcart | (noun) a cart that is drawn by an ox | - |
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| oxheart | (noun) large heart-shaped sweet cherry with soft flesh | Synonyms: heart cherry, oxheart cherry |
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| (noun) any of several cultivated sweet cherries having sweet juicy heart-shaped fruits | Synonyms: heart cherry, oxheart cherry |
| part | (noun) the actions and activities assigned to or required or expected of a person or group | Synonyms: function, office, role |
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| (noun) the effort contributed by a person in bringing about a result | Synonyms: contribution, share |
| (noun) something less than the whole of a human artifact | Synonyms: portion |
| (noun) an item that is an instance of some type | Synonyms: piece |
| (noun) a line of scalp that can be seen when sections of hair are combed in opposite directions | Synonyms: parting |
| (noun) one of the portions into which something is regarded as divided and which together constitute a whole | Synonyms: division, section |
| (noun) an actor's portrayal of someone in a play | Synonyms: character, persona, role, theatrical role |
| (noun) that which concerns a person with regard to a particular role or situation | - |
| (noun) the melody carried by a particular voice or instrument in polyphonic music | Synonyms: voice |
| (noun) the extended spatial location of something | Synonyms: region |
| (noun) a portion of a natural object | Synonyms: piece |
| (noun) assets belonging to or due to or contributed by an individual person or group | Synonyms: percentage, portion, share |
| (noun) something determined in relation to something that includes it | Synonyms: component, component part, constituent, portion |
| partaker | (noun) someone who has or gives or receives a part or a share | Synonyms: sharer |
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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 | - |
| parthenocarpy | (noun) (botany) the development of a fruit without fertilization or seeds | - |
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| parthenogenesis | (noun) process in which an unfertilized egg develops into a new individual; common among insects and some other arthropods | Synonyms: parthenogeny |
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| (noun) human conception without fertilization by a man | Synonyms: parthenogeny, virgin birth |
| parthenogeny | (noun) process in which an unfertilized egg develops into a new individual; common among insects and some other arthropods | Synonyms: parthenogenesis |
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| (noun) human conception without fertilization by a man | Synonyms: parthenogenesis, virgin birth |
| parthenote | (noun) a cell resulting from parthenogenesis | - |
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| partial | (noun) the derivative of a function of two or more variables with respect to a single variable while the other variables are considered to be constant | Synonyms: partial derivative |
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| (noun) a harmonic with a frequency that is a multiple of the fundamental frequency | Synonyms: overtone, partial tone |
| partiality | (noun) an inclination to favor one group or view or opinion over alternatives | Synonyms: partisanship |
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| (noun) a predisposition to like something | Synonyms: fancy, fondness |
| partialness | (noun) the state of being only a part; not total; incomplete | - |
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| participant | (noun) someone who takes part in an activity | Synonyms: player |
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| (noun) a person who participates in or is skilled at some game | Synonyms: player |
| participation | (noun) the act of sharing in the activities of a group | Synonyms: engagement, involution, involvement |
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| (noun) the condition of sharing in common with others (as fellows or partners etc.) | Synonyms: involvement |
| participial | (noun) a non-finite form of the verb; in English it is used adjectivally and to form compound tenses | Synonyms: participle |
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| participle | (noun) a non-finite form of the verb; in English it is used adjectivally and to form compound tenses | Synonyms: participial |
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| particle | (noun) a function word that can be used in English to form phrasal verbs | - |
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| (noun) a body having finite mass and internal structure but negligible dimensions | Synonyms: subatomic particle |
| (noun) (nontechnical usage) a tiny piece of anything | Synonyms: atom, corpuscle, molecule, mote, speck |
| particular | (noun) a fact about some part (as opposed to general) | Synonyms: specific |
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| (noun) (logic) a proposition that asserts something about some (but not all) members of a class | Synonyms: particular proposition |
| (noun) a small part that can be considered separately from the whole | Synonyms: detail, item |
| particularisation | (noun) an individualized description of a particular instance | Synonyms: detailing, particularization |
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| particularism | (noun) a focus on something particular | - |
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| particularity | (noun) the quality of being particular and pertaining to a specific case or instance | Synonyms: specialness |
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| particularization | (noun) an individualized description of a particular instance | Synonyms: detailing, particularisation |
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| particulate | (noun) a small discrete mass of solid or liquid matter that remains individually dispersed in gas or liquid emissions (usually considered to be an atmospheric pollutant) | Synonyms: particulate matter |
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| parting | (noun) the act of departing politely | Synonyms: farewell, leave-taking, leave |
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| (noun) a line of scalp that can be seen when sections of hair are combed in opposite directions | Synonyms: part |
| partisan | (noun) a pike with a long tapering double-edged blade with lateral projections; 16th and 17th centuries | Synonyms: partizan |
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| (noun) a fervent and even militant proponent of something | Synonyms: drumbeater, zealot |
| (noun) an ardent and enthusiastic supporter of some person or activity | Synonyms: enthusiast, partizan |
| partisanship | (noun) an inclination to favor one group or view or opinion over alternatives | Synonyms: partiality |
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| partita | (noun) (music) an instrumental suite common in the 18th century | - |
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| (noun) one of the variations contained in a partita | - |
| partition | (noun) the act of dividing or partitioning; separation by the creation of a boundary that divides or keeps apart | Synonyms: division, partitioning, sectionalisation, sectionalization, segmentation |
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| (noun) a vertical structure that divides or separates (as a wall divides one room from another) | Synonyms: divider |
| (noun) (anatomy) a structure that separates areas in an organism | - |
| (noun) (computer science) the part of a hard disk that is dedicated to a particular operating system or application and accessed as a single unit | - |
| partitioning | (noun) the act of dividing or partitioning; separation by the creation of a boundary that divides or keeps apart | Synonyms: division, partition, sectionalisation, sectionalization, segmentation |
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| (noun) an analysis into mutually exclusive categories | Synonyms: breakdown |
| partitionist | (noun) an advocate of partitioning a country | - |
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| partitive | (noun) word (such a `some' or `less') that is used to indicate a part as distinct from a whole | - |
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| partizan | (noun) a pike with a long tapering double-edged blade with lateral projections; 16th and 17th centuries | Synonyms: partisan |
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| (noun) an ardent and enthusiastic supporter of some person or activity | Synonyms: enthusiast, partisan |
| partner | (noun) an associate in an activity or endeavor or sphere of common interest | Synonyms: collaborator, cooperator, pardner |
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| (noun) a person's partner in marriage | Synonyms: better half, married person, mate, spouse |
| (noun) a person who is a member of a partnership | - |
| partnership | (noun) a contract between two or more persons who agree to pool talent and money and share profits or losses | - |
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| (noun) the members of a business venture created by contract | - |
| (noun) a cooperative relationship between people or groups who agree to share responsibility for achieving some specific goal | - |
| partridge | (noun) small Old World gallinaceous game birds | - |
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| (noun) a popular North American game bird; named for its call | Synonyms: bobwhite, bobwhite quail |
| (noun) valued as a game bird in eastern United States and Canada | Synonyms: Bonasa umbellus, ruffed grouse |
| (noun) heavy-bodied small-winged South American game bird resembling a gallinaceous bird but related to the ratite birds | Synonyms: tinamou |
| (noun) flesh of either quail or grouse | - |
| partridgeberry | (noun) creeping woody plant of eastern North America with shiny evergreen leaves and scarlet berries | Synonyms: boxberry, Mitchella repens, twinberry |
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| parts | (noun) the local environment | - |
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| partsong | (noun) a song with two or more voice parts | - |
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| parturiency | (noun) concluding state of pregnancy; from the onset of contractions to the birth of a child | Synonyms: childbed, confinement, labor, labour, lying-in, travail |
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| parturition | (noun) the process of giving birth | Synonyms: birth, birthing, giving birth |
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| party | (noun) an occasion on which people can assemble for social interaction and entertainment | - |
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| (noun) a gathering of people for pleasure | - |
| (noun) an organization to gain political power | Synonyms: political party |
| (noun) a band of people associated temporarily in some activity | Synonyms: company |
| (noun) a person involved in legal proceedings | - |
| partygoer | (noun) someone who is attending a party | - |
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| periarteritis | (noun) inflammation of the outer coat of an artery | - |
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| polyarteritis | (noun) inflammation of several arteries | - |
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| ponycart | (noun) a cart with an underslung axle and two seats | Synonyms: donkey cart, pony cart, tub-cart |
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| pushcart | (noun) wheeled vehicle that can be pushed by a person; may have one or two or four wheels | Synonyms: cart, go-cart, handcart |
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| quart | (noun) a United States liquid unit equal to 32 fluid ounces; four quarts equal one gallon | - |
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| (noun) a British imperial capacity measure (liquid or dry) equal to 2 pints or 1.136 liters | - |
| (noun) a United States dry unit equal to 2 pints or 67.2 cubic inches | Synonyms: dry quart |
| quartan | (noun) a malarial fever that recurs every fourth day | - |
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| quarter | (noun) clemency or mercy shown to a defeated opponent | - |
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| (noun) the rear part of a ship | Synonyms: after part, poop, stern, tail |
| (noun) piece of leather that comprises the part of a shoe or boot covering the heel and joining the vamp | - |
| (noun) a district of a city having some distinguishing character | - |
| (noun) an unspecified person | - |
| (noun) a United States or Canadian coin worth one fourth of a dollar | - |
| (noun) one of four equal parts | Synonyms: fourth, fourth part, one-fourth, one-quarter, quartern, twenty-five percent |
| (noun) a quarter of a hundredweight (25 pounds) | - |
| (noun) a quarter of a hundredweight (28 pounds) | - |
| (noun) one of the four major division of the compass | - |
| (noun) one of four periods into which the school year is divided | - |
| (noun) (football, professional basketball) one of four divisions into which some games are divided | - |
| (noun) a fourth part of a year; three months | - |
| (noun) a unit of time equal to 15 minutes or a quarter of an hour | - |
| quarterback | (noun) (American football) the position of the football player in the backfield who directs the offensive play of his team | Synonyms: field general, signal caller |
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| (noun) (football) the person who plays quarterback | Synonyms: field general, signal caller |
| quarterdeck | (noun) the stern area of a ship's upper deck | - |
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| quarterfinal | (noun) one of the four competitions in an elimination tournament whose winners go on to play in the semifinals | - |
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| quartering | (noun) dividing into four equal parts | - |
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| (noun) living accommodations (especially those assigned to military personnel) | - |
| (noun) a coat of arms that occupies one quarter of an escutcheon; combining four coats of arms on one shield usually represented intermarriages | - |
| quarterlight | (noun) car window consisting of a small pivoted glass vent in the door of a car | - |
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| quarterly | (noun) a periodical that is published every quarter (or four issues per year) | - |
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| quartermaster | (noun) an army officer who provides clothing and subsistence for troops | - |
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| quartern | (noun) one of four equal parts | Synonyms: fourth, fourth part, one-fourth, one-quarter, quarter, twenty-five percent |
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| quarters | (noun) housing available for people to live in | Synonyms: living quarters |
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| quarterstaff | (noun) a long stout staff used as a weapon | - |
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| quartervine | (noun) woody flowering vine of southern United States; stems show a cross in transverse section | Synonyms: Bignonia capreolata, cross vine, quarter-vine, trumpet flower |
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| quartet | (noun) a musical composition for four performers | Synonyms: quartette |
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| (noun) four people considered as a unit | Synonyms: foursome, quartette |
| (noun) a set of four similar things considered as a unit | Synonyms: quadruple, quadruplet, quartette |
| (noun) four performers or singers who perform together | Synonyms: quartette |
| (noun) the cardinal number that is the sum of three and one | Synonyms: 4, four, foursome, IV, Little Joe, quadruplet, quatern, quaternary, quaternion, quaternity, tetrad |
| quartette | (noun) a musical composition for four performers | Synonyms: quartet |
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| (noun) four people considered as a unit | Synonyms: foursome, quartet |
| (noun) a set of four similar things considered as a unit | Synonyms: quadruple, quadruplet, quartet |
| (noun) four performers or singers who perform together | Synonyms: quartet |
| quartic | (noun) an algebraic equation or function of the fourth degree | Synonyms: biquadrate, biquadratic, fourth power |
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| quartile | (noun) (statistics) any of three points that divide an ordered distribution into four parts each containing one quarter of the scores | - |
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| quarto | (noun) the size of a book whose pages are made by folding a sheet of paper twice to form four leaves | Synonyms: 4to |
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| quartz | (noun) a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities | - |
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| (noun) colorless glass made of almost pure silica | Synonyms: crystal, lechatelierite, quartz glass, vitreous silica |
| quartzite | (noun) hard metamorphic rock consisting essentially of interlocking quartz crystals | - |
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| quasiparticle | (noun) a quantum of energy (in a crystal lattice or other system) that has position and momentum and can in some respects be regarded as a particle | - |
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| rampart | (noun) an embankment built around a space for defensive purposes | Synonyms: bulwark, wall |
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| redstart | (noun) European songbird with a reddish breast and tail; related to Old World robins | Synonyms: redtail |
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| (noun) flycatching warbler of eastern North America the male having bright orange on sides and wings and tail | Synonyms: American redstart, Setophaga ruticilla |
| repartee | (noun) adroitness and cleverness in reply | - |
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| sartor | (noun) a person whose occupation is making and altering garments | Synonyms: seamster, tailor |
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| sartorius | (noun) a muscle in the thigh that helps to rotate the leg into the sitting position assumed by a tailor; the longest muscle in the human body | Synonyms: musculus sartorius, sartorius muscle |
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| smart | (noun) a kind of pain such as that caused by a wound or a burn or a sore | Synonyms: smarting, smartness |
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| smarta | (noun) one of a group of brahmans who uphold nonsectarian orthodoxy according to the Vedanta school of Hinduism | - |
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| smarting | (noun) a kind of pain such as that caused by a wound or a burn or a sore | Synonyms: smart, smartness |
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| smartness | (noun) elegance by virtue of being fashionable | Synonyms: chic, chichi, chicness, last word, modishness, stylishness, swank |
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| (noun) liveliness and eagerness | Synonyms: alacrity, briskness |
| (noun) intelligence as manifested in being quick and witty | Synonyms: brightness, cleverness |
| (noun) a kind of pain such as that caused by a wound or a burn or a sore | Synonyms: smart, smarting |
| smartphone | (noun) a mobile phone with more advanced computing capability and connectivity than basic feature phones | Synonyms: smart phone |
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| softheartedness | (noun) a feeling of concern for the welfare of someone (especially someone defenseless) | Synonyms: tenderness |
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| spondylarthritis | (noun) arthritis that affects one or more of the intervertebral joints in the spine | - |
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| stalwart | (noun) a person who is loyal to their allegiance (especially in times of revolt) | Synonyms: loyalist |
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