erectile (adj.) Look up erectile at Dictionary.com
1830, from French érectile, from Latin erect-, past participle stem of erigere (see erect (adj.)).
erection (n.) Look up erection at Dictionary.com
mid-15c., "establishment; advancement," from Late Latin erectionem (nominative erectio), noun of action from past participle stem of erigere (see erect (adj.)). Meaning "the putting up" (of a building, etc.), "stiffening of the penis" are both from 1590s.
erector (n.) Look up erector at Dictionary.com
1530s, agent noun in Latin form from erect (v.).
eremite (n.) Look up eremite at Dictionary.com
c.1200, learned form of hermit (q.v.), from Church Latin eremita. Since mid-17c. in poetic or rhetorical use only, except in reference to specific examples in early Church history. Related: Eremitic; eremitical.
erg (n.1) Look up erg at Dictionary.com
unit of energy in the C.G.S. system, coined 1873 by the British Association for the Advancement of Science from Greek ergon "work" (see organ).
erg (n.2) Look up erg at Dictionary.com
"region of drifting sand dunes," 1875, from French erg (1854), from North African Arabic 'irj, from a Berber word.
ergative Look up ergative at Dictionary.com
1943, grammatical case used for the subjects of transitive verbs (in Eskimo, Basque, Caucasian languages), from Greek ergatos "workman," from ergos "work" (see organ) + -ive.
ergo Look up ergo at Dictionary.com
c.1400, from Latin ergo "therefore, in consequence of," possibly from *ex rogo "from the direction," from ex "out of" (see ex-) + root of regere "to guide" (see regal).
ergonomics (n.) Look up ergonomics at Dictionary.com
"scientific study of the efficiency of people in the workplace," coined 1950 from Greek ergon "work" (see organ) + second element of economics.
ergophobia (n.) Look up ergophobia at Dictionary.com
"fear of work," 1905, coinage by British medical man Dr. William Dunnett Spanton, from Greek ergos "work" (see organ) + -phobia "fear."
Mr. W.D. Spanton (Leeds) considered that the most prominent causes of physical degeneration were--efforts to rear premature and diseased infants, absurd educational high pressure, cigarette smoking in the younger generation, and late hours at night; in fact, the love of pleasure and ergophobia in all classes of society. He considered that there was too much cheap philanthropy, that life was made too easy for the young poor, and that by modern educational methods proper parental discipline was rendered almost impossible. [report on the 73rd annual meeting of the British Medical Association, "Nature," Aug. 3, 1905]
ergot (n.) Look up ergot at Dictionary.com
fungal disease of rye and other grasses, 1680s, from French ergot, from Old French argot "cock's spur" (12c.), of unknown origin. The blight so called from the shape the fungus forms on the diseased grain. Ergotism "disease caused by eating ergot-infected breadstuffs," first recorded 1853. An alkaloid from the fungus, ergotamine (1921) is used to treat migraines.
Eric Look up Eric at Dictionary.com
masc. proper name, from Old Norse Eirikr, literally "honored ruler," from Proto-Germanic *aiza- "honor" + *rik- "ruler" (see regal). The German form is Erich.
Erica Look up Erica at Dictionary.com
fem. proper name, feminine form of Eric.
Erie Look up Erie at Dictionary.com
one of the Great Lakes, named for a native Iroquoian people who lived nearby, from French Erie, shortening of Rhiienhonons, said to mean "raccoon nation," perhaps in reference to a totemic animal.
Erin Look up Erin at Dictionary.com
ancient name of Ireland, from Old English Erinn, dative of Eriu "Ireland" (see Irish). As a girl's name in U.S., rare before 1954, popular 1976-1985.
Erinys (n.) Look up Erinys at Dictionary.com
(plural erinyes), one of the three avenging spirits (Alecto, Tisiphone, Megaera) in Greek religion, of unknown origin, perhaps "the angry spirit" (compare Arcadian erinein "to be angry," Greek orinein "to raise, stir, excite," eris "strife, discord"). Related: Erinnic.
Eris Look up Eris at Dictionary.com
goddess of discord, from Greek eris "strife, discord," of uncertain origin. Related: Eristic.
Eritrea Look up Eritrea at Dictionary.com
named 1890 when it was an Italian colony, from Mare Erythreum, Roman name of the Red Sea, from Greek Erythre Thalassa, literally "Red Sea" (to the Greeks also including the Gulf of Arabia and the Indian Ocean), from erythros "red" (see red (1)).
Erl-king Look up Erl-king at Dictionary.com
1797, in Scott's translation of Goethe, from German Erl-könig, literally "alder-king," Herder's erroneous translation of Danish ellerkonge "king of the elves." Compare German Eller, Erle "alder" (see alder).
Ermentrude Look up Ermentrude at Dictionary.com
fem. proper name, from Old High German Ermentrudis, from ermin "whole, universal" + trut "beloved, dear."
ermine (n.) Look up ermine at Dictionary.com
late 12c., from Old French ermine (12c., Modern French hermine), both the animal and the fur, apparently from a convergence of Latin (mus) Armenius "Armenian (mouse)," ermines being abundant in Asia Minor; and an unrelated Germanic word for "weasel" (represented by Old High German harmo "ermine, stoat, weasel," adj. harmin; Old Saxon harmo, Old English hearma "shrew," etc.) that happened to sound like it.
erne (n.) Look up erne at Dictionary.com
"sea eagle," from Old English earn "eagle," a common Germanic word (cognates: Old High German arn, German Aar, Middle Dutch arent, Old Norse örn, Gothic ara "eagle"), from PIE root *or- "great bird, eagle" (cognates: Greek ornis "bird," Old Church Slavonic orilu, Lithuanian erelis, Welsh eryr "eagle"). The Germanic word also survives in the first element of old Germanic names such as Arnold and Arthur.
Ernest Look up Ernest at Dictionary.com
masc. proper name, from French Ernest, of German origin (compare Old High German Ernust, German Ernst), literally "earnestness" (see earnest). Among the top 50 names for boys born in U.S. from 1880 through 1933.
Ernestine Look up Ernestine at Dictionary.com
fem. form of Ernest.
erode (v.) Look up erode at Dictionary.com
1610s, a back-formation from erosion, or else from French éroder, from Latin erodere "to gnaw away, consume" (see erosion). Related: Eroded; eroding. Originally of acids, ulcers, etc.; geological sense is from 1830.
erogenous (adj.) Look up erogenous at Dictionary.com
formed 1889 from Greek eros "sexual love" (see Eros) + -genous "producing." A slightly earlier variant was erogenic (1887), from French érogénique. Both, as OED laments, are improperly formed. Erogenous zone attested by 1905.
In this connection reference may be made to the well-known fact that in some hysterical subjects there are so-called "erogenous zones" simple pressure on which suffices to evoke the complete orgasm. There is, perhaps, some significance, from our present point of view, in the fact that, as emphasized by Savill ("Hysterical Skin Symptoms," Lancet, January 30 1904) the skin is one of the very best places to study hysteria. [Havelock Ellis, "Studies in the Psychology of Sex," 1914]
Eros (n.) Look up Eros at Dictionary.com
god of love, late 14c., from Greek eros (plural erates), literally "love," related to eran "to love," erasthai "to love, desire," of uncertain origin.

Freudian sense of "urge to self-preservation and sexual pleasure" is from 1922. Ancient Greek distinguished four ways of love: erao "to be in love with, to desire passionately or sexually;" phileo "have affection for;" agapao "have regard for, be contented with;" and stergo, used especially of the love of parents and children or a ruler and his subjects.
erose (adj.) Look up erose at Dictionary.com
1793, from Latin erosus, past participle of erodere (see erosion).
erosion (n.) Look up erosion at Dictionary.com
1540s, from Middle French erosion (16c.), from Latin erosionem (nominative erosio) "a gnawing away," noun of action from past participle stem of erodere "gnaw away," from ex- "away" (see ex-) + rodere "gnaw" (see rodent).
erotic (adj.) Look up erotic at Dictionary.com
1620s (implied in erotical), from French érotique (16c.), from Greek erotikos "caused by passionate love, referring to love," from eros (genitive erotos) "sexual love" (see Eros).
erotica (n.) Look up erotica at Dictionary.com
1820, noun use of neuter plural of Greek erotikos "amatory" (see erotic); originally a booksellers' catalogue heading.
Force Flame
And with a Blonde push
Over your impotence
Flits Steam
[Emily Dickinson, #854, c.1864]
eroticism (n.) Look up eroticism at Dictionary.com
1853, from erotic + -ism.
eroticize (v.) Look up eroticize at Dictionary.com
1914, from erotic + -ize. Related: Eroticized; eroticizing.
erotomaniac (n.) Look up erotomaniac at Dictionary.com
"one driven mad by passionate love" (sometimes also used in the sense of "nymphomaniac"), 1858, from erotomania (1813, defined then as "Desperate love; sentimentalism producing morbid feelings"), from comb. form of erotic + mania.
err (v.) Look up err at Dictionary.com
c.1300, from Old French errer "go astray, lose one's way; make a mistake; transgress," from Latin errare "wander, go astray, be in error," from PIE root *ers- (1) "be in motion, wander around" (cognates: Sanskrit arsati "flows;" Old English ierre "angry, straying;" Old Frisian ire "angry;" Old High German irri "angry," irron "astray;" Gothic airziþa "error, deception;" the Germanic words reflecting the notion of anger as a "straying" from normal composure). Related: Erred; erring.
errand (n.) Look up errand at Dictionary.com
Old English ærende "message, mission; answer, news, tidings," from Proto-Germanic *ærundjam (cognates: Old Saxon arundi, Old Norse erendi, Danish ærende, Swedish ärende, Old Frisian erende, Old High German arunti "message"). Originally of important missions; meaning "short, simple journey and task" is attested by 1640s. Related: Errands.
errant (adj.) Look up errant at Dictionary.com
mid-14c., "travelling, roving," from Anglo-French erraunt, from two Old French words that were confused even before they reached English: 1. Old French errant, present participle of errer "to travel or wander," from Late Latin iterare, from Latin iter "journey, way," from root of ire "to go" (see ion); 2. Old French errant, past participle of errer (see err). The senses fused in English 14c., but much of the sense of the latter since has gone with arrant.
errata (n.) Look up errata at Dictionary.com
plural of erratum (q.v.).
erratic (adj.) Look up erratic at Dictionary.com
late 14c., "wandering, moving," from Old French erratique (13c.) and directly from Latin erraticus "wandering, straying, roving," from erratum "an error, mistake, fault," past participle of errare "to wander, err" (see err). Sense of "irregular, eccentric" is attested by 1841. The noun is from 1620s, of persons; 1849, of boulders. Related: Erratically.
erratum (n.) Look up erratum at Dictionary.com
"list of corrections attached to a printed book," 1580s, from Latin erratum (plural errata), neuter past participle of errare (see err).
erroneous (adj.) Look up erroneous at Dictionary.com
late 14c., from Old French erroneus and directly from Latin erroneus "vagrant, wandering" (in Late Latin "erroneous"), from erronem (nominative erro) "vagabond," from errare "to wander, err" (see err). Related: Erroneously.
error (n.) Look up error at Dictionary.com
also, through 18c., errour, c.1300, from Old French error "mistake, flaw, defect, heresy," from Latin errorem (nominative error) "a wandering, straying, mistake," from errare "to wander" (see err).

Words for "error" in most Indo-European languages originally meant "wander, go astray" (but Irish has dearmad "error," from dermat "a forgetting").
ersatz (adj.) Look up ersatz at Dictionary.com
1875, from German Ersatz "units of the army reserve," literally "compensation, replacement, substitute," from ersetzen "to replace," from Old High German irsezzen, from ir-, unaccented variant of ur- + setzen "to set" (see set (v.)). As a noun, from 1892.
Erse Look up Erse at Dictionary.com
late 14c., early Scottish variant of Old English Irisc or Old Norse Irskr "Irish" (see Irish); applied by Lowland Scots to the Gaelic speech of the Highlanders (which originally is from Ireland); sense shifted 19c. from "Highlanders" to "Irish."
erstwhile (adv.) Look up erstwhile at Dictionary.com
1560s, from Middle English erest "soonest, earliest," from Old English ærest, superlative of ær (see ere) + while. As an adjective from 1903. Cognate with Old Saxon and Old High German erist, German erst.
eructation (n.) Look up eructation at Dictionary.com
"belching," 1530s, from Latin eructationem (nominative eructatio) "a belching forth," noun of action from past participle stem of eructare "to belch forth, vomit," from ex- "out" (see ex-) + ructare "to belch," from PIE *reug- "to belch" (cognates: Lithuanian rugiu "to belch," Greek eryge, Armenian orcam), probably of imitative origin. Related: Eruct; eructate.
erudite (adj.) Look up erudite at Dictionary.com
early 15c., from Latin eruditus, past participle of erudire "to educate, teach, instruct, polish," literally "to bring out of the rough," from ex- "out" (see ex-) + rudis "unskilled, rough, unlearned" (see rude).
erudition (n.) Look up erudition at Dictionary.com
c.1400, "instruction, education," from Latin eruditionem (nominative eruditio) "an instructing," noun of action from past participle stem of erudire (see erudite). Meaning "learning, scholarship" is from 1520s.
erupt (v.) Look up erupt at Dictionary.com
1650s, of diseases, etc., from Latin eruptus, past participle of erumpere "to break out, burst" (see eruption). Of volcanoes, from 1770. Related: Erupted; erupting.
eruption (n.) Look up eruption at Dictionary.com
early 15c., from Middle French éruption (14c.) and directly from Latin eruptionem (nominative eruptio) "a breaking out," noun of action from past participle stem of erumpere "break out, burst forth," from ex- "out" (see ex-) + rumpere "to break, rupture" (see rupture (n.)).