英语词源字典 - 在线词源网站

RISC [RISC 词源字典]: "Computers or computing based on a form of microprocessor designed to perform a limited set of operations extremely quickly", 1980s: acronym from reduced instruction set computer (or computing).[RISC etymology, RISC origin, 英语词源]
reflower: "To flower or flourish again", Late Middle English. From re- + flower, probably partly after classical Latin reflōrēscere or post-classical Latin reflorere and French refleurir.
refluent: "Flowing back; ebbing", Late Middle English: from Latin refluent- 'flowing back', from the verb refluere, from re- 'back' + fluere 'to flow'.
reperforator: "A machine which perforates paper tape in accordance with telegraphically received signals or computer output; a machine for producing a copy of a perforated tape", Early 20th cent. From re- + perforator.
reposit (1): " Surgery = reposition", Late 18th cent.; earliest use found in Western County Magazine. In sense 1 either from reposit, or shortened from repository.
reposit (2): "To put (a thing) in a place, especially for storage or safe keeping; to repose, deposit", Mid 17th cent.; earliest use found in Henry Lord (b. 1563), clergyman and ethnographer. From classical Latin reposit-, past participial stem of repōnere repone.
rosery: "A portion of a garden set apart for growing roses; a rose garden", Mid 18th cent. From rose + -ery, probably as an alteration of rosary.
riverain: "A person who or animal which lives on the banks or in the vicinity of a river. Now rare", Early 19th cent.; earliest use found in The Universal Magazine. From French riverain (noun) person who lives on the banks of a river or near a river, or who owns land or property there, animal or plant whose habitat is on the banks of or in the vicinity of a river, (adjective) (of a place, estate, building, etc.) extending along a forest or (now chiefly) a way of communication such as a road, railway line, etc., situated on the banks of a river or other expanse of water (1848 or earlier; earlier in sense ‘(of a person) holding feudal possessions on the banks of or in the vicinity of a river’) from rivière + -ain. The sense of the English word was influenced by association with river early on, especially in the case of sense B. 2, which is unparalleled in French.
ranarium: "A place for keeping and breeding frogs", Early 19th cent.; earliest use found in John Loudon (1783–1843), landscape gardener and horticultural writer. From classical Latin rāna frog + -arium, after herbarium, vivarium, etc.
ranarian: "Relating to or characteristic of a frog or frogs; froglike", Early 19th cent.; earliest use found in Thomas Love Peacock (1785–1866), satirical novelist and poet. From classical Latin rāna frog + -arian.
revenuer: "A government officer who enforces laws against the illegal distillation of alcohol", Late 19th cent. From revenue + -er. Compare revenue, 5c.
revibrate: "To cause to vibrate again; to subject to a second or further vibration. Now chiefly technical", Early 18th cent. From re- + vibrate, after post-classical Latin revibrare (1679 in this sense in the passage translated in quot. 1702; 5th cent. in senses ‘to reflect (something)’ and ‘to give a reflection’).
rale: "An abnormal rattling sound heard when examining unhealthy lungs with a stethoscope", Early 19th century: from French râle, from râler 'to rattle'.
rancidify: "To make rancid", Early 20th cent.; earliest use found in U.S. Patents. From rancid + -ify.
recurvate (1): "Bent back; = recurved", Mid 16th cent.; earliest use found in Thomas Hill (b. c1528). From classical Latin recurvātus, past participle of recurvāre.
recurvate (2): "To turn back; = recurve", Late 16th cent. From classical Latin recurvāt-, past participial stem of recurvāre recurve. Compare earlier recurvate, and also recurve and recurvation.
retinaculum: " Anatomy . A structure that holds (or appears to hold) something in place; specifically †(a) = proligerous disc ( obsolete ); (b) a ligamentous band retaining tendons in place, especially in the region of the wrist and ankle (frequently with distinguishing English or scientific Latin word or words)", Mid 17th cent.; earliest use found in Thomas Johnson (d. 1644), apothecary and soldier. From classical Latin retināculum rope that holds a thing fast, cable, tether, animal's rein, towing rope, in post-classical Latin also surgical clamp from retinēre + -culum.
ratite: "(Of a bird) having a flat breastbone without a keel, and so unable to fly", Late 19th century: from Latin ratis 'raft' + -ite¹.
rectus: "Any of several straight muscles, in particular", Early 18th century: from Latin, literally 'straight'.
retractile: "Capable of being retracted", Late 18th century: from retract, on the pattern of contractile.