英语词源字典 - 在线词源网站

er [er 词源字典]: as a sound of hesitation or uncertainty, attested from mid-19c.[er etymology, er origin, 英语词源]
ER: abbreviation of emergency room, by 1965.
era (n.): 1716, earlier aera (1610s), from Late Latin aera, era "an era or epoch from which time is reckoned" (7c.), probably identical with Latin aera "counters used for calculation," plural of aes (genitive aeris) "brass, copper, money" (see ore, also compare copper). The Latin word's use in chronology said to have begun in 5c. Spain (where the local era, aera Hispanica, began 38 B.C.E.; some say because of a tax levied that year). Other ancient eras included the Chaldean (autumn of 311 B.C.E.), the Era of Actium (31 B.C.E.), of Antioch (49 B.C.E.), of Tyre (126 B.C.E.), the Olympiadic (July 1, 776 B.C.E.) and the Seleucidan (autumn 312 B.C.E.). In English it originally meant "the starting point of an age" (compare epoch); meaning "system of chronological notation" is from 1640s; that of "historical period" is from 1741, as in the U.S. Era of Good Feeling (1817) was anything but.
eradicate (v.): early 15c., "destroy utterly," literally "pull up by the roots," from Latin eradicatus, past participle of eradicare "to root out, annihilate" (see eradication). Related: Eradicated; eradicating; eradicable.
eradication (n.): early 15c., from Latin eradicationem (nominative eradicatio), noun of action from past participle stem of eradicare "root out, extirpate, annihilate," from assimilated form of ex- "out" (see ex-) + radix (genitive radicis) "root" (see radish).
erasable (adj.): 1829, from erase + -able.
erase (v.): c. 1600, from Latin erasus, past participle of eradere "scrape out, scrape off, shave; abolish, remove," from assimilated form of ex- "out" (see ex-) + radere "to scrape" (see raze). Of magnetic tape, from 1945. Related: Erased; erasing.
eraser (n.): "thing that erases writing," 1790, American English, agent noun from erase. Originally a knife for scraping off the ink. As a rubber product for removing pencil marks, from 1858.
Erasmus: masc. proper name, Latin, literally "beloved;" related to Greek erasmios "lovely, pleasant," from eran "to love" (see Eros). Related: Erasmian.
Erastus: masc. proper name, Latin, literally "beloved," from Greek erastos, verbal adjective of eran "to love" (see Eros).
erasure (n.): "an erasing, an obliterating," 1734, from erase + -ure.
Erato: muse who presided over lyric poetry, literally "the Lovely," from Greek erastos "loved, beloved; lovely, charming," verbal adjective of eran "to love, to be in love with" (see Eros).
erbium (n.): 1843, coined in Modern Latin with metallic element name -ium + erbia, name given by Swedish chemist Carl Gustaf Mosander (1797-1858), who discovered it, from second element in Ytterby, name of a town in Sweden where mineral containing it was found (see Ytterbium).
ere (prep.): c. 1200, from Old English ær (adv., conj., & prep.) "soon, before (in time)," from Proto-Germanic *airiz, comparative of *air "early" (cognates: Old Saxon, Old Frisian, Old High German er, Dutch eer; German eher "earlier;" Old Norse ar "early;" Gothic air "early," airis "earlier"), from PIE *ayer- "day, morning" (cognates: Avestan ayar "day;" Greek eerios "at daybreak," ariston "breakfast"). The adverb erstwhile retains the Old English superlative ærest "earliest."
Erebus: in Homer, etc., the place of darkness between Earth and Hades, from Latin Erebus, from Greek Erebos, which is of unknown origin, perhaps from Semitic (compare Hebrew erebh "sunset, evening"), or from PIE *regw-es- "darkness" (cognates: Sanskrit rajas "the atmosphere, thick air, mist, darkness;" Gothic rikwis "darkness"). Used figuratively of darkness from 1590s.
Erechtheus: legendary first king and founder of Athens, from Latin Erechtheus, from Greek Erekhtheos, literally "render, shaker" (of the earth), from erekhthein "to rend, break, shatter, shake." Hence Erechtheum, the name of a temple on the Athenian acropolis.
erect (adj.): late 14c., "upright, not bending," from Latin erectus "upright, elevated, lofty; eager, alert, aroused; resolute; arrogant," past participle of erigere "raise or set up," from e- "up, out of" + regere "to direct, keep straight, guide" (see regal).
erect (v.): c. 1400, a back-formation from erect (adj.) or else from Latin erectus. Related: Erected; erecting.
erectile (adj.): 1822, "pertaining to muscular erection," from French érectile, from Latin erect-, past participle stem of erigere "to raise or set up" (see erect (adj.)).
erection (n.): mid-15c., "establishment; advancement," from Late Latin erectionem (nominative erectio), noun of action from past participle stem of erigere "to set up, erect" (see erect (adj.)). Meanings "the putting up" (of a building, etc.), "stiffening of the penis" (also sometimes of the turgidity and rigidity of the clitoris) are both from 1590s.