rehouse (v.) Look up rehouse at Dictionary.com
also re-house, 1820, from re- + house (v.). Related: Rehoused; rehousing.
rehydrate (v.) Look up rehydrate at Dictionary.com
1923, from re- + hydrate (v.). Related: Rehydrated; rehydrating.
rehydration (n.) Look up rehydration at Dictionary.com
1853, from re- + hydration.
Reich (n.) Look up Reich at Dictionary.com
German, "kingdom, realm, state," from Old High German rihhi, related to Old English rice, from Proto-Germanic *rikja "rule" (cognates: Old Norse riki, Danish rige, Old Frisian and Middle Dutch rike, Dutch rijk, Gothic reiki), from PIE *reg- (1) "move in a straight line," hence, "direct in a straight line, rule, guide" (see regal). Don Ringe, "From Proto-Indo-European to Proto-Germanic" [Oxford 2006] identifies it as a Celtic loan-word in Germanic rather than a direct evolution from PIE, based on the vowel. Used in English from 1871-1945 to refer to "the German state, Germany." Most notoriously in Third Reich (see third); there never was a First or Second in English usage.
Reichstag (n.) Look up Reichstag at Dictionary.com
"German imperial parliament" (1871-1918), earlier used of the chief deliberative body of the North German Confederacy, 1867, from German Reichstag, from Reich (see Reich) + Tag "assembly," literally "day" (see day). The Reichstag Fire was Feb. 27, 1933.
reification (n.) Look up reification at Dictionary.com
1846, "act of materializing," from Latin re-, stem of res "thing" + -fication. In Marxist jargon, translating German Verdinglichung.
reify (v.) Look up reify at Dictionary.com
"make into a thing; make real or material; consider as a thing," 1854, back-formation from reification, or else from re-, stem of Latin res "thing, object, matter, affair, event, circumstance, condition," from PIE *re- "to bestow, endow" + -fy. Related: Reified; reifying.
reign (n.) Look up reign at Dictionary.com
early 13c., "kingdom," from Old French reigne "kingdom, land, country" (Modern French règne), from Latin regnum "kingship, dominion, rule, realm," related to regere (see regal). Meaning "period of rule" first recorded mid-14c.
reign (v.) Look up reign at Dictionary.com
"to hold or exercise sovereign power," late 13c., from Old French regner "rule, reign" (12c.), from Latin regnare "have royal power, be king, rule, reign," from regnum (see reign (n.)). Related: Reigned; reigning; regnal.
reimburse (v.) Look up reimburse at Dictionary.com
1610s, from re- "back" + imburse "to pay, enrich," literally "put in a purse" (c.1530), from Middle French embourser, from Old French em- "in" + borser "to get money," from borse "purse," from Medieval Latin bursa (see purse (n.)). Related: Reimbursed; reimbursing.
reimbursement (n.) Look up reimbursement at Dictionary.com
1610s, from reimburse + -ment.
reimprison (v.) Look up reimprison at Dictionary.com
also re-imprison, 1610s, from re- + imprison. Related: Re-imprisoned; re-imprisoning.
Reims Look up Reims at Dictionary.com
city in northeastern France, named for the Remi, a Gaulish people whose name is said to mean "dominant ones." The former French spelling was with an Rh-.
rein (n.) Look up rein at Dictionary.com
c.1300, "strap fastened to a bridle," from Old French rene, resne "reins, bridle strap, laces" (Modern French rêne), probably from Vulgar Latin *retina "a bond, check," back-formation from Latin retinere "hold back" (see retain). To give something free rein is originally of horses.
rein (v.) Look up rein at Dictionary.com
c.1300, from rein (n.). Figurative extension "put a check on" first recorded 1580s. Related: Reined; reining. To rein up "halt" (1550s) is from the way to make a horse stop by pulling up on the reins.
reincarnate (v.) Look up reincarnate at Dictionary.com
1858, from re- + incarnate. Related: Reincarnated; reincarnating. As an adjective from 1882.
reincarnation (n.) Look up reincarnation at Dictionary.com
1829, "fact of repeated incarnation," from re- "back, again" + incarnation. Meaning "a new embodiment" is from 1854.
reindeer (n.) Look up reindeer at Dictionary.com
c.1400, from a Scandinavian source such as Old Norse hreindyri "reindeer," from dyr "animal" (see deer) + hreinn, by itself the usual name for the animal, from Proto-Germanic *khrinda- (cognates: Old English hran "reindeer;" German Renn "reindeer," which was altered by folk etymology influence of rennen "to run;" Swedish ren-ko "female reindeer," with ko "cow" (n.)).

Probably from PIE *krei-, from base *ker- (1) "horn, head," with derivatives referring to horned animals (both male and female reindeer have horns; those of the male are remarkable), and thus perhaps cognate with Greek krios "ram" (see kerato-). Older sources connect it to words in Lapp or Finnish. French renne, Spanish reno, Italian renna ultimately are from Germanic.
reinforce (v.) Look up reinforce at Dictionary.com
c.1600, originally in military sense, from re- "again" + enforce (compare re-enforce). Related: Reinforced; reinforcing.
reinforcement (n.) Look up reinforcement at Dictionary.com
c.1600, "act of reinforcing," from reinforce + -ment. Meaning "an augmentation, that which reinforces" is from 1650s. Related: Reinforcements.
reins (n.) Look up reins at Dictionary.com
see rein (n.). Figurative sense "means of controlling; control, check, restraint" is from early 14c.
reinstall (v.) Look up reinstall at Dictionary.com
also re-install, 1590s, from re- + install. Related: Re-installed; re-installing.
reinstate (v.) Look up reinstate at Dictionary.com
1590s, from re- + instate. Related: Reinstated; reinstating.
reinstatement (n.) Look up reinstatement at Dictionary.com
1700, from reinstate + -ment. Reinstation is recorded from 1680s.
reintegrate (v.) Look up reintegrate at Dictionary.com
1580s, from re- + integrate. Also in classically correct form redintegrate. Related: Reintegrated; reintegrating.
reintegration (n.) Look up reintegration at Dictionary.com
c.1600, from French réintegration (15c.) or directly from Medieval Latin reintegrationem; see reintegrate + -ion. Also in classically correct form redintegration.
reintroduce (v.) Look up reintroduce at Dictionary.com
1660s, from re- + introduce. Related: Reintroduced; reintroducing.
reintroduction (n.) Look up reintroduction at Dictionary.com
1660s, from re- + introduction.
reinvent (v.) Look up reinvent at Dictionary.com
1680s, from re- + invent. Related: Reinvented; reinventing. Phrase reinvent the wheel "do redundant work" attested by 1971.
reinvention (n.) Look up reinvention at Dictionary.com
1719, from re- + invention.
reinvest (v.) Look up reinvest at Dictionary.com
1610s, of money 1848, also re-invest, 1610s of vestments, etc.; 1848 of money; from re- + invest. Related: Reinvested; reinvesting.
reinvigorate (v.) Look up reinvigorate at Dictionary.com
1650s, from re- + invigorate. Related: Reinvigorated; reinvigorating.
reinvite (v.) Look up reinvite at Dictionary.com
also re-invite, 1610s, from re- + invite (v.). Related: Reinvited; reinviting.
reissue (v.) Look up reissue at Dictionary.com
1610s, from re- "back, again" + issue (v.). Related: Reissued; reissuing. The noun is attested from 1805.
reiterate (v.) Look up reiterate at Dictionary.com
early 15c., "repeat again and again," from Late Latin reiteratus, past participle of reiterare "to repeat," from re- "again" (see re-) + iterare "to repeat," from iterum "again" (see iteration). Related: Reiterated; reiterating.
reiteration (n.) Look up reiteration at Dictionary.com
early 15c., from Middle French reiteration and directly from Latin reiterationem (nominative reiteratio) "repetition," noun of action from past participle stem of reiterare (see reiterate).
reject (v.) Look up reject at Dictionary.com
early 15c., from Old French rejecter and directly from Latin reiectus, past participle of reiectare "throw away, cast away, vomit," frequentative of reicere "to throw back," from re- "back" (see re-) + -icere, comb. form of iacere "to throw" (see jet (v.)). Related: Rejected; rejecting.
reject (n.) Look up reject at Dictionary.com
1550s, "a castaway" (rare), from reject (v.). Modern use probably a re-formation of the same word: "thing cast aside as unsatisfactory" (1893); "person considered low-quality and worthless" (1925, from use in militaries).
rejection (n.) Look up rejection at Dictionary.com
1550s, from French réjection (16c.) or directly from Latin reiectionem (nominative reiectio) "act of throwing back," noun of action from past participle stem of reicere (see reject). In 19c., it also could mean "excrement." Medical transplant sense is from 1954. In the psychological sense, relating to parenting, from 1931.
rejoice (v.) Look up rejoice at Dictionary.com
c.1300, "to own, possess, enjoy the possession of, have the fruition of," from Old French rejoiss-, present participle stem of rejoir, resjoir "gladden, rejoice," from re-, which here is of obscure signification, perhaps an intensive (see re-), + joir "be glad," from Latin gaudere "rejoice" (see joy).

Originally sense in to rejoice in. Meaning "to be full of joy" is recorded from late 14c. Middle English also used simple verb joy "to feel gladness; to rejoice" (mid-13c.) and rejoy (early 14c.). Related: Rejoiced; rejoicing.
rejoicing (n.) Look up rejoicing at Dictionary.com
late 14c., verbal noun from rejoice (v.). Related: Rejoicingly.
rejoin (v.1) Look up rejoin at Dictionary.com
also re-join, 1520s, "unite again, unite after separation" (transitive), from re- "again" + join (v.). Meaning "join the company of again" is from 1610s. Related: Rejoined; rejoining.
rejoin (v.2) Look up rejoin at Dictionary.com
"to answer," mid-15c., legal term, from Middle French rejoin-, stem of rejoindre "to answer to a legal charge," from Old French re- "back" (see re-) + joindre "to join" (see join). General (non-legal) meaning first recorded 1630s.
rejoinder (n.) Look up rejoinder at Dictionary.com
mid-15c., from Middle French noun use of rejoindre (see rejoin (v.2)). Originally "defendant's answer to the replication" (the fourth stage in the pleadings in an action at common law). For noun use of infinitive in French law terms, see waiver.
rejuvenate (v.) Look up rejuvenate at Dictionary.com
1807, irregular formation from re- "again" + Latin juvenis (see young (adj.)) + -ate (2). Related: Rejuvenated; rejuvenating.
rejuvenation (n.) Look up rejuvenation at Dictionary.com
1834, noun of action from rejuvenate.
rejuvenescence (n.) Look up rejuvenescence at Dictionary.com
"renewal of youth," 1630s, from Latin rejuvenescere, from re- "again" (see re-) + juvenescere "become young," from juvenis "young" (see young (adj.)) + -ence.
rejuvenescent (adj.) Look up rejuvenescent at Dictionary.com
1763, from Medieval Latin rejuvenescentem (nominative rejuvenescens), present participle of rejuvenescere (see rejuvenescence).
rekindle (v.) Look up rekindle at Dictionary.com
1590s, from re- "back, again" + kindle (v.). Figurative use from 1650s. Related: Rekindled; rekindling.
relapse (v.) Look up relapse at Dictionary.com
early 15c., "renounce;" 1560s, "fall into a former state," from Latin relapsus, past participle of relabi "slip back, slide back, sink back," from re- "back" (see re-) + labi "to slip" (see lapse (n.)). Related: Relapsed; relapsing.