英语词源字典 - 在线词源网站

recruitment (n.)[recruitment 词源字典]: 1795, from recruit (v.) + -ment.[recruitment etymology, recruitment origin, 英语词源]
recrystallization (n.): 1782, from re- + crystallization.
recrystallize (v.): also re-crystallize, 1774, from re- + crystallize. Related: Recrystallized; recrystallizing.
rectal (adj.): 1822, from stem of rectum + -al (1). Related: Rectally.
rectangle (n.): 1570s, from Middle French rectangle (16c.) and directly from Late Latin rectangulum, from rect-, comb. form of Latin rectus "right" (see right (adj.1)) + Old French angle (see angle (n.)). Medieval Latin rectangulum meant "a triangle having a right angle."
rectangular (adj.): 1620s, from Middle French rectangulaire (16c.) or formed in English from Latin stem of rectangle + -ar. Related: Rectangularity.
rectification (n.): c. 1400, from Old French rectificacion (14c.) or directly from Late Latin rectificationem (nominative rectificatio), noun of action from past participle stem of rectificare (see rectify).
rectifier (n.): 1610s, agent noun from rectify.
rectify (v.): c. 1400, from Old French rectifier, literally "to make straight" (14c.), from Late Latin rectificare "make right," from Latin rectus "straight" (see right (adj.1)) + root of facere "to make" (see factitious). Related: Rectified; rectifying.
rectilinear (adj.): "forming a straight line," 1650s, with -ar + rectiline (1560s), from Late Latin rectilineus, from rectus "straight" (see right (adj.1)) + linea "line" (see line (n.)). Related: Rectilineal (1640s).
rectitude (n.): early 15c., "quality of being straight," from Middle French rectitude (14c.), from Late Latin rectitudinem (nominative rectitudo) "straightness, uprightness," from Latin rectus "straight" (see right (adj.1)). Sense of "upright in conduct or character" is from 1530s.
recto (n.): "right-hand page in an open book" (opposed to verso or reverso), 1824, from Latin recto (in recto folio), ablative of rectum "right," (see right (adj.1)).
recto-: word-forming element meaning "pertaining to or involving the rectum," before vowels rect-, from comb. form of rectum.
rector (n.): late 14c. (early 13c. in Anglo-Latin), from Latin rector "ruler, governor, director, guide," from rect-, past participle stem of regere "to rule, guide" (see regal). Used originally of Roman governors and God, by 18c. generally restricted to clergymen and college heads. Related: Rectorship.
rectory (n.): mid-15c., from French rectorie (14c.) or Medieval Latin rectoria, from rector (see rector). Originally "benefice held by a rector;" of his residence, from 1849.
rectum (n.): early 15c., from Latin intestinum rectum "straight intestine," in contrast to the convolution of the rest of the bowels, from neuter past participle of regere "to straighten" (see regal). A loan-translation of Greek apeuthysmeon enteron, "the name given to the lowest part of the large intestine by Galen, who so called it because he dissected only animals whose rectum (in contradistinction to that of man) is really straight" [Klein].
recumbent (adj.): 1705, from Latin recumbentem (nominative recumbens), present participle of recumbere "recline, lie down, lie down again;" of things, "to fall, sink down, settle down," from re- "back" (see re-) + -cumbere "to lie down" (see succumb). Related: Recumbency (1640s). A verb, recumb, has been attempted in English occasionally since 1670s.
recuperate (v.): 1540s, from Latin recuperatus, past participle of recuperare "to get again," in Medieval Latin "revive, convalesce, recover" (see recuperation). Meaning "to recover from sickness or loss" is from 1864. Related: Recuperated; recuperating.
recuperation (n.): late 15c., "recovery or regaining of things," from Latin recuperationem (nominative recuperatio) "a getting back, regaining, recovery," noun of action from past participle stem of recuperare "get back, regain, get again," in Medieval Latin "revive, convalesce, recover," related to recipere (see receive). Meaning "restoration to health or vigor" is from 1865.
recur (v.): late 14c., "recover from illness or suffering;" mid-15c., "to return" (to a place), from Latin recurrere "to return, run back, hasten back," figuratively "revert, recur," from re- "back, again" (see re-) + currere "to run" (see current (adj.)). Originally of persons; application to thoughts, ideas, etc. is recorded from 1620s. Meaning "happen again" is from 1670s. Related: Recurred; recurring.