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exert (v.)[exert 词源字典]: 1660s, "thrust forth, push out," from Latin exertus/exsertus, past participle of exerere/exserere "thrust out, put forth," from ex- "out" (see ex-) + serere "attach, join" (see series). Meaning "put into use" is 1680s. Related: Exerted; exerting.[exert etymology, exert origin, 英语词源]
exertion (n.): 1660s, "act of exerting," from exert + -ion. Meaning "vigorous action or effort" is from 1777.
Exeter: Old English Exanceaster, Escanceaster, from Latin Isca (c. 150), from Celtic river name Exe "the water" + Old English ceaster "Roman town" (see Chester).
exeunt (v.): stage direction, late 15c., from Latin, literally "they go out," third person plural present indicative of exire (see exit).
exfoliate (v.): 1610s, transitive; 1670s intransitive; from Late Latin exfoliatus, past participle of exfoliare "to strip of leaves," from ex- "off" (see ex-) + folium "leaf" (see folio). Related: Exfoliated; exfoliating.
exfoliation (n.): early 15c., noun of action from Latin exfoliare (see exfoliate).
exhalation (n.): late 14c., "act of exhalation; that which is exhaled," from Latin exhalationem (nominative exhalatio) "an exhalation, vapor," noun of action from past participle stem of exhalare "to breathe out" (see exhale).
exhale (v.): c. 1400, transitive, originally of liquids, perfumes, etc., from Middle French exhaler (14c.), from Latin exhalare "breathe out, evaporate," from ex- "out" (see ex-) + halare "breathe." Of living things, "to breathe out," 1580s transitive; 1863 intransitive. Related: Exhaled; exhaling.
exhaust (v.): 1530s, "to draw off or out, to use up completely," from Latin exhaustus, past participle of exhaurire "draw off, take away, use up, empty," from ex- "off" (see ex-) + haurire "to draw up" (as water), from PIE *aus- (3) "to draw water." Meaning "make weak or helpless, as by fatigue" is from 1630s. Related: Exhausted; exhausting.
exhaust (n.): "waste gas," 1848, originally from steam engines, from exhaust (v.). In reference to internal combustion engines by 1896. Exhaust pipe is from 1889.
exhausted (adj.): mid-17c., "consumed, used up;" of persons, "tired out," past participle adjective from exhaust (v.). Related: Exhaustedly.
exhaustion (n.): 1640s, "fatigue," noun of action from exhaust (v.) in sense of "drawing off" of strength. Etymological sense "act of drawing out or draining off" is from 1660s in English.
exhaustive (adj.): 1780s, from exhaust (v.) + -ive. Related: Exhaustively; exhaustiveness.
exhibit (v.): "offer or present to view," mid-15c., from Latin exhibitus, past participle of exhibere "to hold out, display, show, present, deliver" (see exhibition). Related: Exhibited; exhibiting.
exhibit (n.): 1620s, "document or object produced as evidence in court," from Latin exhibitum, noun use of neuter past participle of exhibere "to display, show" (see exhibition). Meaning "object displayed in a fair, museum, etc." is from 1862. Transferred use of exhibit A "important piece of evidence" is by 1906.
exhibition (n.): early 14c., "action of displaying," from Old French exhibicion, exibicion "show, exhibition, display," from Late Latin exhibitionem (nominative exhibitio), noun of action from past participle stem of Latin exhibere "to show, display, present," literally "hold out, hold forth," from ex- "out" (see ex-) + habere "to hold" (see habit (n.)). Also from early 15c. as "sustenance, food, source of support." Meaning "that which is exhibited" is from 1786.
exhibitionist (n.): 1821, "one who takes part in an exhibition;" psychosexual sense is from 1893, in Craddock's translation of Krafft-Ebing; see exhibition + -ist. Related: Exhibitionism (1893); exhibitionistic (1928). Exhibitioner is from 1670s in the English university sense.
exhibitor (n.): 1650s (as exhibiter, 1590s), from Late Latin exhibitor, agent noun from past participle stem of Latin exhibere "to display, show" (see exhibition).
exhilarate (v.): 1530s, from Latin exhilaratus "cheerful, merry," past participle of exhilarare "gladden, cheer," from ex- "thoroughly" (see ex-) + hilarare "make cheerful," from hilarus "cheerful" (see hilarity). Related: Exhilarated; exhilarating.
exhilaration (n.): 1620s, from Late Latin exhilarationem (nominative exhilaratio) "a gladdening," noun of action from past participle stem of exhilarare (see exhilarate).