Plasticine Look up Plasticine at Dictionary.com
modeling clay substitute, 1897, from plastic (adj.) + -ine (2).
plasticity Look up plasticity at Dictionary.com
1782, from plastic + -ity.
plastid (n.) Look up plastid at Dictionary.com
1876, from German plastid, coined by Haeckel from Greek plastos "molded, formed" (see plaster) + -id.
plastron (n.) Look up plastron at Dictionary.com
c. 1500, from Middle French plastron "breastplate," from Italian piastrone, augmentative of piastra "breastplate, thin metal plate" (see piaster). As an animal part, from 1813; as an article of dress, 1876.
plat (n.) Look up plat at Dictionary.com
"piece of ground," 1510s, from plot (q.v.), assimilated to Middle English adjective plat "flat," which is from Old French plat "flat, stretched out" (see plateau (n.)). See OED for full explanation.
plat (v.) Look up plat at Dictionary.com
"to interweave," late 14c., variant of plait (v.). Related: Platted; platting.
plate (n.) Look up plate at Dictionary.com
mid-13c., "flat sheet of gold or silver," also "flat, round coin," from Old French plate "thin piece of metal" (late 12c.), from Medieval Latin plata "plate, piece of metal," perhaps via Vulgar Latin *plattus, formed on model of Greek platys "flat, broad" (see plaice (n.)). The cognate in Spanish (plata) and Portuguese (prata) has become the usual word for "silver," superseding argento via shortening of *plata d'argento "plate of silver, coin." Meaning "table utensils" (originally of silver or gold only) is from Middle English. Meaning "shallow dish for food," now usually of china or earthenware, originally of metal or wood, is from mid-15c. Baseball sense is from 1857. Geological sense is first attested 1904; plate tectonics first recorded 1969. Plate-glass first recorded 1727.
plate (v.) Look up plate at Dictionary.com
late 14c., from plate (n.). Related: Plated; plating.
plateau (n.) Look up plateau at Dictionary.com
1796, "elevated tract of relatively level land," from French plateau "table-land," from Old French platel (12c.) "flat piece of metal, wood, etc.," diminutive of plat "flat surface or thing," noun use of adjective plat "flat, stretched out" (12c.), perhaps from Vulgar Latin *plattus, from Greek platys "flat, wide, broad" (see plaice). Meaning "stage at which no progress is apparent" is attested from 1897, originally in psychology of learning. In reference to sexual stimulation from 1960.
plateau (v.) Look up plateau at Dictionary.com
1952, from plateau (n.). Related: Plateaued; plateauing.
platelet (n.) Look up platelet at Dictionary.com
1895, formed in English from plate (n.) + diminutive suffix -let.
platen (n.) Look up platen at Dictionary.com
1540s, from Middle French plateine, from Old French platine "flat piece, metal plate" (13c.), perhaps altered (by influence of plat "flat") from patene, from Latin patena "pan."
platform (n.) Look up platform at Dictionary.com
1540s, "plan of action, scheme, design," from Middle French plateforme, platte fourme, literally "flat form," from Old French plat "flat" (see plateau (n.)) + forme "form" (see form (n.)). The literal sense of "raised, level surface" in English is first recorded 1550s. Political meaning, "statement of party policies," is from 1803, probably originally an image of a literal platform on which politicians gather, stand, and make their appeals, perhaps influenced by earlier sense of "set of rules governing church doctrine" (first attested 1570s). Railroad station sense is from 1838.
platinum (n.) Look up platinum at Dictionary.com
metallic element, 1812, Modern Latin, from Spanish platina "platinum," diminutive of plata "silver," from Old French plate or Old Provençal plata "sheet of metal" (see plate (n.)). The metal looks like silver, and the Spaniards at first thought it an inferior sort of silver, hence the name platina. It was first obtained from Spanish colonies in Mexico and Colombia, brought to Europe in 1735, and identified as an element 1741. Taken into English as platina (c. 1750), it took its modern form (with element ending -ium) in 1812, at the time the names of elements were being regularized. As a shade of blond hair, attested from 1931. As a designation for a recording that has sold at least one million copies, it is attested from 1971.
platitude (n.) Look up platitude at Dictionary.com
1812, "dullness," from French platitude "flatness, vapidness" (late 17c.), from Old French plat "flat" (see plateau (n.)); formed on analogy of latitude, etc. Meaning "a flat, dull, or commonplace remark" is recorded from 1815. Related: Platitudinous. Hence platitudinarian (n.), 1855; platitudinize (1867).
Platonic (adj.) Look up Platonic at Dictionary.com
1530s, "of or pertaining to Greek philosopher Plato" (429 B.C.E.-c. 347 B.C.E.), from Latin Platonicus, from Greek Platonikos. The name is Greek Platon, properly "broad-shouldered" (from platys "broad;" see plaice (n.)). His original name was Aristocles. The meaning "love free of sensual desire" (1630s), which the word usually carries nowadays, is a Renaissance notion; it is based on Plato's writings in "Symposium" about the kind of interest Socrates took in young men, which originally had no reference to women. Related: Platonically.
Platonism (n.) Look up Platonism at Dictionary.com
1560s, from Plato (see Platonic) + -ism.
Platonist (n.) Look up Platonist at Dictionary.com
1540s, from Plato (see Platonic) + -ist.
platoon (n.) Look up platoon at Dictionary.com
1630s, from French peloton "platoon, group of people," from Middle French peloton (15c.), literally "little ball," hence, "agglomeration," diminutive of Old French pelote "ball" (see pellet).
platoon (v.) Look up platoon at Dictionary.com
in baseball, "to alternate (a player) with another in the same position," 1967, from platoon (n.), which had been used in team sports since 1941.
Plattdeutsch Look up Plattdeutsch at Dictionary.com
"Low German dialect of northern Germany," 1814, from German, from Dutch platduits, literally "flat (or low) German," from plat "flat, plain, clear" + duits "German" (see Dutch). In contrast to the speech of the upland parts of Germany.
platter (n.) Look up platter at Dictionary.com
late 13c., platere, from Anglo-French plater, from Old French plate "metal plate" (see plate (n.)).
platypus (n.) Look up platypus at Dictionary.com
Australian duck-mole, 1799, from Modern Latin, from Greek platypous, literally "flat-footed," from platys "broad, flat" (see plaice (n.)) + pous "foot," from PIE root *ped- (1) "a foot" (see foot (n.)).
Orig. the generic name, but, having already been given to a genus of beetles, it was in 1800 changed for Ornithorhyncus. [OED]
plaudit (n.) Look up plaudit at Dictionary.com
1620s, short for plaudite "an actor's request for applause" (1560s), from Latin plaudite! "applaud!" second person plural imperative of plaudere "to clap, strike, beat; applaud, approve," of unknown origin (also in applaud, explode). This was the customary appeal for applause that Roman actors made at the end of a play. In English, the -e went silent then was dropped.
plausibility (n.) Look up plausibility at Dictionary.com
1590s, from plausible + -ity.
plausible (adj.) Look up plausible at Dictionary.com
1540s, "acceptable, agreeable," from Latin plausibilis "deserving applause, acceptable," from plaus-, past participle stem of plaudere "to applaud" (see plaudit). Meaning "having the appearance of truth" is recorded from 1560s. Related: Plausibly.
play (v.) Look up play at Dictionary.com
Old English plegan, plegian "move rapidly, occupy or busy oneself, exercise; frolic; make sport of, mock; perform music," from West Germanic *plegan "occupy oneself about" (cognates: Old Saxon plegan "vouch for, take charge of," Old Frisian plega "tend to," Middle Dutch pleyen "to rejoice, be glad," German pflegen "take care of, cultivate"), from PIE root *dlegh- "to engage oneself," forming words in Celtic, Germanic, Slavic, and possibly Latin.

Meaning "to take part in a game" is from c. 1200. Opposed to work (v.) since late 14c. Related: Played; playing. To play up "emphasize" is from 1909; to play down "minimize" is from 1930; to play along "cooperate" is from 1929. To play with oneself "masturbate" is from 1896; play for keeps is from 1861, originally of marbles or other children's games with tokens. To play second fiddle in the figurative sense is from 1809 ("Gil Blas"). To play into the hands (of someone) is from 1705. To play the _______ card is attested from 1886; to play fair is from mid-15c. To play (something) safe is from 1911; to play favorites is attested from 1902. For play the field see field (n.).
play (n.) Look up play at Dictionary.com
Old English plega (West Saxon), plæga (Anglian) "quick motion; recreation, exercise, any brisk activity" (the latter sense preserved in swordplay, etc.), from or related to Old English plegan (see play (v.)). Meaning "dramatic performance" is attested by early 14c., perhaps late Old English. Meaning "free or unimpeded movement" of mechanisms, etc., is from c. 1200. By early Middle English it could mean variously, "a game, a martial sport, activity of children, joke or jesting, revelry, sexual indulgence." Sporting sense "the playing of a game" first attested mid-15c.; sense of "specific maneuver or attempt" is from 1868. To be in play (of a hit ball, etc.) is from 1788. Play-by-play is attested from 1927. Play on words is from 1798. Play-money is attested from 1705 as "money won in gambling," by 1920 as "pretend money."
play-bill (n.) Look up play-bill at Dictionary.com
also playbill, 1670s, from play (n.) + bill (n.1).
play-day (n.) Look up play-day at Dictionary.com
c. 1600, from play + day.
play-dough (n.) Look up play-dough at Dictionary.com
1959, from play + dough.
play-list (n.) Look up play-list at Dictionary.com
also playlist, 1975 in the radio station sense, from play (v.) + list (n.).
play-pen (n.) Look up play-pen at Dictionary.com
also playpen, 1931, from play + pen (n.2).
play-time (n.) Look up play-time at Dictionary.com
also playtime, 1660s in the recreational sense, from play (n.) + time (n.).
playbook (n.) Look up playbook at Dictionary.com
also play-book, 1530s, "book of stage plays," from play (n.) + book (n.). Meaning "Book of football plays" recorded from 1965.
playboy (n.) Look up playboy at Dictionary.com
1829, "wealthy bon vivant," from play (v.) + boy. Fem. equivalent playgirl first recorded 1934. As the name of a U.S. based magazine for men, from December 1953.
player (n.) Look up player at Dictionary.com
Old English plegere, agent noun from play (v.). Stage sense is from mid-15c. As a pimp's word for himself (also playa), attested from 1974. Player-piano attested from 1901.
playful (adj.) Look up playful at Dictionary.com
mid-13c., from play (v.) + -ful. Related: Playfully; playfulness.
playground (n.) Look up playground at Dictionary.com
1780, from play (v.) + ground (n.). Old English had plegstow "village sports ground," literally "place for play."
playhouse (n.) Look up playhouse at Dictionary.com
late Old English pleghus; see play (n.) + house (n.).
playmate (n.) Look up playmate at Dictionary.com
1640s, "companion, playfellow," from play (v.) + mate (n.). The sexual sense is from 1954 and the launch of "Playboy" magazine.
plaything (n.) Look up plaything at Dictionary.com
1670s, from play (v.) + thing.
playwright (n.) Look up playwright at Dictionary.com
1680s, from play (n.) + wright.
plaza (n.) Look up plaza at Dictionary.com
1830, from Spanish plaza "square, place," from Vulgar Latin *plattia, from Latin platea "courtyard, broad street" (see place (n.)).
plea (n.) Look up plea at Dictionary.com
early 13c., "lawsuit," from Anglo-French plai (late 12c.), Old French plait "lawsuit, decision, decree" (9c.), from Medieval Latin placitum "lawsuit," in classical Latin, "opinion, decree," literally "that which pleases, thing which is agreed upon," properly neuter past participle of placere (see please). Sense development seems to be from "something pleasant," to "something that pleases both sides," to "something that has been decided." Meaning "a pleading, an agreement in a suit" is attested from late 14c. Plea-bargaining is first attested 1963. Common pleas (early 13c.) originally were legal proceedings over which the Crown did not claim exclusive jurisdiction (as distinct from pleas of the Crown); later "actions brought by one subject against another."
plead (v.) Look up plead at Dictionary.com
mid-13c., "make a plea in court," from Anglo-French pleder, Old French plaidier, "plead at court" (11c.), from Medieval Latin placitare, from Late Latin placitum (see plea). Sense of "request, beg" first recorded late 14c. Related: Pleaded; pleading; pleadingly.
pleading (n.) Look up pleading at Dictionary.com
late 13c., "the carrying on of a suit at court," verbal noun from plead (v.). Meaning "supplication, intercession" is from early 15c.
pleasance (n.) Look up pleasance at Dictionary.com
late 14c., from Old French plaisance "pleasure, delight, enjoyment," from plaisant (see pleasant).
pleasant (adj.) Look up pleasant at Dictionary.com
late 14c. (early 14c. as a surname), from Old French plaisant "pleasant, pleasing, agreeable" (12c.), present participle of plaisir "to please" (see please). Pleasantry has the word's modern French sense of "funny, jocular." Related: Pleasantly.
pleasantry (n.) Look up pleasantry at Dictionary.com
"sprightly humor in conversation," 1650s, from French plaisanterie "joke, jest; joking, jesting," from plaisant (see pleasant). Related: Pleasantries.