purchaser (n.)youdaoicibaDictYouDict[purchaser 词源字典]
c. 1300, from Anglo-French, Old French porchaceor, agent noun from porchacier (see purchase (v.)). [purchaser etymology, purchaser origin, 英语词源]
purdah (n.)youdaoicibaDictYouDict
1800, from Urdu and Persian pardah "veil, curtain," from Old Persian pari "around, over" (from PIE *per- (1); see per-) + da- "to place", from PIE *dhe- "to set, put" (see factitious).
pure (adj.)youdaoicibaDictYouDict
c. 1300 (late 12c. as a surname, and Old English had purlamb "lamb without a blemish"), "unmixed," also "absolutely, entirely," from Old French pur "pure, simple, absolute, unalloyed," figuratively "simple, sheer, mere" (12c.), from Latin purus "clean, clear; unmixed; unadorned; chaste, undefiled," from PIE root *peue- "to purify, cleanse" (cognates: Latin putus "clear, pure;" Sanskrit pavate "purifies, cleanses," putah "pure;" Middle Irish ur "fresh, new;" Old High German fowen "to sift").

Replaced Old English hlutor. Meaning "free from moral corruption" is first recorded mid-14c. In reference to bloodlines, attested from late 15c.
pureblood (adj.)youdaoicibaDictYouDict
1851, from pure blood (n.), attested from 1751 in reference to breeding, from pure (adj.) + blood (n.). As a noun meaning "a pure-blood animal" from 1882.
purebred (adj.)youdaoicibaDictYouDict
1868, from pure + bred.
puree (n.)youdaoicibaDictYouDict
1707, from French purée "pea soup" (puree de pois, early 14c.), of uncertain origin, perhaps from past participle of purer "to strain, cleanse," from Latin purare "purify," from purus (see pure).
puree (n.)youdaoicibaDictYouDict
1934, from puree (n.). Related: Pureed.
purely (adv.)youdaoicibaDictYouDict
late 13c., from pure + -ly (2).
purgation (n.)youdaoicibaDictYouDict
late 14c., "purification from sin," also "discharge of waste," from Old French purgacion "a cleansing," medical or spiritual (12c., Modern French purgation) and directly from Latin purgationem (nominative purgatio) "a cleansing, purging," figuratively "an apology, justification," noun of action from past participle stem of purgare (see purge (v.)).
purgative (adj.)youdaoicibaDictYouDict
late 14c., from Old French purgatif (14c.) and directly from Late Latin purgativus, from purgat-, past participle stem of Latin purgare (see purge (v.)). The noun is attested from early 15c. (Old English medical texts have clænsungdrenc).
purgatory (n.)youdaoicibaDictYouDict
c. 1200, from Old French purgatore and directly from Medieval Latin purgatorium (St. Bernard, early 12c.), in Latin, "means of cleansing," noun use of neuter of purgatorius (adj.) "purging, cleansing," from purgat-, past participle stem of Latin purgare (see purge (v.)). Figurative use from late 14c.
purge (v.)youdaoicibaDictYouDict
c. 1300, "clear of a charge or suspicion;" late 14c., "cleanse, clear, purify," from Anglo-French purger, Old French purgier "wash, clean; refine, purify" morally or physically (12c., Modern French purger) and directly from Latin purgare "cleanse, make clean; purify," especially of the body, "free from what is superfluous; remove, clear away," figuratively "refute, justify, vindicate" (also source of Spanish purgar, Italian purgare), from Old Latin purigare, from purus "pure" (see pure) + root of agere "to drive, make" (see act (n.)). Related: Purged; purging.
purge (n.)youdaoicibaDictYouDict
1560s, "that which purges," from purge (v.). Meaning "a purgative, an act of purging" is from 1590s. Political sense from 1730. Earliest sense in English was the now-obsolete one "examination in a legal court" (mid-15c.).
purgery (n.)youdaoicibaDictYouDict
"bleaching room for sugar," 1847, from French purgerie (1838), from purger (see purge (v.)). For the legal term, see perjury.
purification (n.)youdaoicibaDictYouDict
late 14c., originally especially in reference to Feast of the Purification of the Virgin Mary, from Old French purificacion, from Latin purificationem (nominative purificatio) "a purifying," noun of action from past participle stem of purificare (see purify). General sense from 1590s.
purifier (n.)youdaoicibaDictYouDict
late 15c., agent noun from purify; as a type of mechanical apparatus, from 1834.
purify (v.)youdaoicibaDictYouDict
early 14c., "free from spiritual pollution," from Old French purefier "purify, cleanse, refine" (12c.), from Latin purificare "to make pure," from purus "pure" (see pure) + root of facere "to make" (see factitious). Meaning "free from extraneous matter" is recorded from mid-15c. Related: Purified; purifying.
Purim (n.)youdaoicibaDictYouDict
Jewish festival on the 14th of Adar (in commemoration of the defeat of Haman's plot), late 14c., from Hebrew purim, literally "lots" (plural of pur), identified with haggoral "the lot" (Esther iii:7, ix:24), perhaps from Akkadian puru "stone, urn," "which itself is prob. a loan word from Sumeric bur" [Klein].
purine (n.)youdaoicibaDictYouDict
1898, from German purin (Fischer), said to be from Latin purum, neuter of purus "clean, pure" (see pure) + Modern Latin uricum "uric acid" + chemical suffix -ine (2).
purism (n.)youdaoicibaDictYouDict
1803, of language, from French purisme (see purist + -ism). As a movement in art from 1921.