| perimeter | (noun) the size of something as given by the distance around it | Synonyms: circumference |
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| (noun) the boundary line or the area immediately inside the boundary | Synonyms: border, margin |
| (noun) a line enclosing a plane areas | - |
| perimysium | (noun) the sheath of connective tissue that covers a bundle of muscle fibers | - |
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| pilgrim | (noun) someone who journeys in foreign lands | - |
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| (noun) someone who journeys to a sacred place as an act of religious devotion | - |
| pilgrimage | (noun) a journey to a sacred place | Synonyms: pilgrim's journey |
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| polarimeter | (noun) an optical device used to measure the rotation of the plane of vibration of polarized light | Synonyms: polariscope |
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| prim | (adjective) exaggeratedly proper | Synonyms: priggish, prissy, prudish, puritanical, square-toed, straight-laced, straightlaced, strait-laced, straitlaced, tight-laced, victorian |
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| (adjective) affectedly dainty or refined | Synonyms: mincing, niminy-piminy, twee |
| (verb) dress primly | Synonyms: prim out, prim up |
| (verb) contract one's lips | - |
| (verb) assume a prim appearance | - |
| prima | (adjective) indicating the most important performer or role | Synonyms: leading, star, starring, stellar |
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| primacy | (noun) the state of being first in importance | - |
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| primaeval | (adjective) having existed from the beginning; in an earliest or original stage or state | Synonyms: aboriginal, primal, primeval, primordial |
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| primal | (adjective) having existed from the beginning; in an earliest or original stage or state | Synonyms: aboriginal, primaeval, primeval, primordial |
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| (adjective) serving as an essential component | Synonyms: cardinal, central, fundamental, key |
| primality | (noun) the property of being a prime number | - |
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| primaquine | (noun) synthetic antimalarial drug | - |
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| primarily | (adverb) of primary import | Synonyms: in the first place |
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| (adverb) for the most part | Synonyms: chiefly, in the main, mainly, principally |
| primary | (adjective) of first rank or importance or value; direct and immediate rather than secondary | - |
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| (adjective) of or being the essential or basic part | Synonyms: basal, elemental, elementary |
| (adjective) most important element | Synonyms: chief, main, master, principal |
| (adjective) not derived from or reducible to something else; basic | - |
| (noun) a preliminary election where delegates or nominees are chosen | Synonyms: primary election |
| (noun) one of the main flight feathers projecting along the outer edge of a bird's wing | Synonyms: primary feather, primary quill |
| (noun) coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit | Synonyms: primary coil, primary winding |
| (noun) (astronomy) a celestial body (especially a star) relative to other objects in orbit around it | - |
| primate | (noun) any placental mammal of the order Primates; has good eyesight and flexible hands and feet | - |
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| (noun) a senior clergyman and dignitary | Synonyms: archpriest, hierarch, high priest, prelate |
| primateship | (noun) the office of primate | - |
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| primatology | (noun) the branch of zoology that studies primates | - |
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| prime | (adjective) of or relating to or being an integer that cannot be factored into other integers | - |
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| (adjective) being at the best stage of development | Synonyms: meridian |
| (adjective) of superior grade | Synonyms: choice, prize, quality, select |
| (adjective) used of the first or originating agent | - |
| (adjective) first in rank or degree | Synonyms: premier |
| (noun) a natural number that has exactly two distinct natural number divisors: 1 and itself | Synonyms: prime quantity |
| (noun) the time of maturity when power and vigor are greatest | Synonyms: prime of life |
| (noun) the second canonical hour; about 6 a.m. | - |
| (noun) the period of greatest prosperity or productivity | Synonyms: bloom, blossom, efflorescence, flower, flush, heyday, peak |
| (verb) insert a primer into (a gun, mine, or charge) preparatory to detonation or firing | - |
| (verb) fill with priming liquid | - |
| (verb) cover with a primer; apply a primer to | Synonyms: ground, undercoat |
| primed | (adjective) (usually followed by `to' or `for') on the point of or strongly disposed | Synonyms: fit, set |
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| primer | (noun) any igniter that is used to initiate the burning of a propellant | Synonyms: fuse, fusee, fuze, fuzee, priming |
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| (noun) the first or preliminary coat of paint or size applied to a surface | Synonyms: flat coat, ground, primer coat, priming, priming coat, undercoat |
| (noun) an introductory textbook | - |
| primeval | (adjective) having existed from the beginning; in an earliest or original stage or state | Synonyms: aboriginal, primaeval, primal, primordial |
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| primidone | (noun) an anticonvulsant (trade name Mysoline) used to treat grand mal seizures and essential tremor | Synonyms: Mysoline |
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| primigravida | (noun) (obstetrics) a woman who is pregnant for the first time | Synonyms: gravida I |
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| priming | (noun) the act of making something ready | - |
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| (noun) any igniter that is used to initiate the burning of a propellant | Synonyms: fuse, fusee, fuze, fuzee, primer |
| (noun) the first or preliminary coat of paint or size applied to a surface | Synonyms: flat coat, ground, primer, primer coat, priming coat, undercoat |
| primipara | (noun) (obstetrics) woman who has been delivered of a child for the first time | Synonyms: para I |
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| primiparous | (adjective) of or relating to a woman who has given birth only once | - |
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| primitive | (adjective) used of preliterate or tribal or nonindustrial societies | - |
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| (adjective) of or created by one without formal training; simple or naive in style | Synonyms: naive |
| (adjective) little evolved from or characteristic of an earlier ancestral type | Synonyms: archaic |
| (adjective) belonging to an early stage of technical development; characterized by simplicity and (often) crudeness | Synonyms: crude, rude |
| (noun) a word serving as the basis for inflected or derived forms | - |
| (noun) a mathematical expression from which another expression is derived | - |
| (noun) a person who belongs to an early stage of civilization | Synonyms: primitive person |
| primitively | (adverb) in a primitive style or manner | - |
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| (adverb) with reference to the origin or beginning | Synonyms: in the beginning, originally |
| primitiveness | (noun) a wild or unrefined state | Synonyms: crudeness, crudity, primitivism, rudeness |
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| primitivism | (noun) a genre characteristic of (or imitative of) primitive artists or children | - |
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| (noun) a wild or unrefined state | Synonyms: crudeness, crudity, primitiveness, rudeness |
| primly | (adverb) in a prissy manner | Synonyms: prissily |
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| primness | (noun) exaggerated and arrogant properness | Synonyms: priggishness |
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| (noun) excessive or affected modesty | Synonyms: Grundyism, prudery, prudishness |
| primo | (adjective) the best of its kind | - |
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| (noun) the principal part of a duet (especially a piano duet) | - |
| primogenitor | (noun) an ancestor in the direct line | Synonyms: progenitor |
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| primogeniture | (noun) right of inheritance belongs exclusively to the eldest son | - |
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| primordial | (adjective) having existed from the beginning; in an earliest or original stage or state | Synonyms: aboriginal, primaeval, primal, primeval |
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| primordiality | (noun) The quality of being first, earliest or original. | - |
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| primordium | (noun) an organ in its earliest stage of development; the foundation for subsequent development | Synonyms: anlage |
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| primp | (verb) dress or groom with elaborate care | Synonyms: dress, plume, preen |
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| primping | (noun) careful or finicky grooming | - |
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| primrose | (noun) any of numerous short-stemmed plants of the genus Primula having tufted basal leaves and showy flowers clustered in umbels or heads | Synonyms: primula |
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| primula | (noun) any of numerous short-stemmed plants of the genus Primula having tufted basal leaves and showy flowers clustered in umbels or heads | Synonyms: primrose |
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| primus | (noun) the presiding bishop of the Episcopal Church of Scotland | - |
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| pyrimidine | (noun) a heterocyclic organic compound with a penetrating odor | - |
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| (noun) any of several basic compounds derived from pyrimidine | - |
| recriminate | (verb) return an accusation against someone or engage in mutual accusations; charge in return | - |
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| recrimination | (noun) mutual accusations | - |
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| recriminative | (adjective) countering one charge with another | Synonyms: recriminatory |
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| recriminatory | (adjective) countering one charge with another | Synonyms: recriminative |
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| reprimand | (noun) an act or expression of criticism and censure | Synonyms: rebuke, reprehension, reproof, reproval |
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| (verb) rebuke formally | Synonyms: censure, criminate |
| (verb) censure severely or angrily | Synonyms: bawl out, berate, call down, call on the carpet, chew out, chew up, chide, dress down, have words, jaw, lambast, lambaste, lecture, rag, rebuke, remonstrate, scold, take to task, trounce |
| rim | (noun) the top edge of a vessel or other container | Synonyms: brim, lip |
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| (noun) a projection used for strength or for attaching to another object | Synonyms: flange |
| (noun) the outer part of a wheel to which the tire is attached | - |
| (noun) (basketball) the hoop from which the net is suspended | - |
| (noun) the shape of a raised edge of a more or less circular object | - |
| (verb) roll around the rim of | - |
| (verb) furnish with a rim | - |
| (verb) run around the rim of | - |
| rima | (noun) a narrow elongated opening or fissure between two symmetrical parts | - |
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| rime | (noun) correspondence in the sounds of two or more lines (especially final sounds) | Synonyms: rhyme |
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| (noun) ice crystals forming a white deposit (especially on objects outside) | Synonyms: frost, hoar, hoarfrost |
| (verb) compose rhymes | Synonyms: rhyme |
| (verb) be similar in sound, especially with respect to the last syllable | Synonyms: rhyme |
| rimed | (adjective) covered with frost | Synonyms: frosty, rimy |
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| rimeless | (adjective) not having rhyme | Synonyms: rhymeless, unrhymed, unrimed |
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| riming | (adjective) having corresponding sounds especially terminal sounds | Synonyms: rhymed, rhyming |
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| rimless | (adjective) lacking a rim or frame | - |
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| rimmed | (adjective) having a rim or a rim of a specified kind | - |
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| rimose | (adjective) having a surface covered with a network of cracks and small crevices | - |
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| rimu | (noun) tall New Zealand timber tree | Synonyms: Dacrydium cupressinum, imou pine, red pine |
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| rimy | (adjective) covered with frost | Synonyms: frosty, rimed |
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| scrim | (noun) a firm open-weave fabric used for a curtain in the theater | - |
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| scrimmage | (noun) a noisy riotous fight | Synonyms: battle royal, melee |
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| (noun) (American football) practice play between a football team's squads | - |
| (verb) practice playing (a sport) | - |
| scrimp | (verb) subsist on a meager allowance | Synonyms: skimp, stint |
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| scrimpy | (adjective) deficient in amount or quality or extent | Synonyms: meager, meagerly, meagre, stingy |
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| scrimshank | (verb) avoid work | - |
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| scrimshanker | (noun) a shirker | - |
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| scrimshaw | (noun) a carving (or engraving) on whalebone, whale ivory, walrus tusk, etc., usually by American whalers | - |
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| scrimy | (adjective) dirty and disgusting | - |
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| (adjective) petty or reluctant in giving or spending | Synonyms: grudging, niggardly |
| sensorimotor | (adjective) of or relating to the sensory and motor coordination of an organism or to the controlling nerves | - |
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| shrimp | (noun) small slender-bodied chiefly marine decapod crustaceans with a long tail and single pair of pincers; many species are edible | - |
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| (noun) any of various edible decapod crustaceans | Synonyms: prawn |
| (noun) disparaging terms for small people | Synonyms: half-pint, peewee, runt |
| (verb) fish for shrimp | - |
| shrimper | (noun) a vessel engaged in shrimping | - |
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| shrimpfish | (noun) slender tropical shallow-water East Indian fish covered with transparent plates | Synonyms: shrimp-fish |
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| shrimpy | (adjective) (used especially of persons) of inferior size | Synonyms: puny, runty |
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| superimpose | (verb) place on top of | Synonyms: lay over, superpose |
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| superimposed | (adjective) with one layer on top of another | Synonyms: layered |
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| (adjective) placed on or over something else | Synonyms: overlying |
| trim | (adjective) severely simple in line or design | Synonyms: tailored |
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| (adjective) thin and fit | Synonyms: spare |
| (adjective) characterized by order and neatness; free from disorder | Synonyms: shipshape, well-kept |
| (adjective) neat and smart in appearance | Synonyms: clean-cut, trig |
| (noun) cutting down to the desired size or shape | Synonyms: clipping, trimming |
| (noun) a decoration or adornment typically on the edge of a garment | Synonyms: passementerie, trimming |
| (noun) attitude of an aircraft in flight when allowed to take its own orientation | - |
| (noun) a state of arrangement or appearance | Synonyms: trimness |
| (verb) cut down on; make a reduction in | Synonyms: bring down, cut, cut back, cut down, reduce, trim back, trim down |
| (verb) adjust (sails on a ship) so that the wind is optimally used | - |
| (verb) cut closely | Synonyms: shave |
| (verb) cultivate, tend, and cut back the growth of | Synonyms: clip, crop, cut back, dress, lop, prune, snip |
| (verb) remove the edges from and cut down to the desired size | Synonyms: pare |
| (verb) decorate (food), as with parsley or other ornamental foods | Synonyms: dress, garnish |
| (verb) decorate, as with ornaments | - |
| (verb) be in equilibrium during a flight | - |
| (verb) balance in flight by regulating the control surfaces | - |
| trimaran | (noun) a fast sailboat with 3 parallel hulls | - |
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| trimer | (noun) a polymer (or a molecule of a polymer) consisting of three identical monomers | - |
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| trimester | (noun) a period of three months; especially one of the three three-month periods into which human pregnancy is divided | - |
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| (noun) one of three divisions of an academic year | - |
| trimipramine | (noun) tricyclic antidepressant drug (trade name Surmontil) used to treat depression and anxiety and (sometimes) insomnia | Synonyms: Surmontil |
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| trimly | (adverb) in a trim manner | - |
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| trimmed | (adjective) made neat and tidy by trimming | Synonyms: cut |
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| trimmer | (noun) joist that receives the end of a header in floor or roof framing in order to leave an opening for a staircase or chimney etc. | Synonyms: trimmer joist |
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| (noun) capacitor having variable capacitance; used for making fine adjustments | Synonyms: trimming capacitor |
| (noun) a machine that trims timber | - |
| (noun) a worker who thins out and trims trees and shrubs | Synonyms: pruner |
| trimming | (noun) the act of adding decoration | - |
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| (noun) cutting down to the desired size or shape | Synonyms: clipping, trim |
| (noun) a decoration or adornment typically on the edge of a garment | Synonyms: passementerie, trim |
| trimmings | (noun) the accessories that normally accompany (something or some activity) | Synonyms: fixings |
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| trimness | (noun) a state of arrangement or appearance | Synonyms: trim |
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| trimotored | (adjective) having three motors | - |
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| undiscriminating | (adjective) not discriminating | Synonyms: indiscriminating |
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| unrimed | (adjective) not having rhyme | Synonyms: rhymeless, rimeless, unrhymed |
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| untrimmed | (adjective) not trimmed | Synonyms: uncut |
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| worriment | (noun) a difficulty that causes anxiety | Synonyms: inconvenience, troublesomeness |
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