Online Etymology Dictionary

visa (n.): 1831, "official signature or endorsement on a passport," from French visa, from Modern Latin charta visa "verified paper," literally "paper that has been seen," from fem. past participle of Latin videre "to see" (see vision). Earlier visé (1810), from French past participle of viser "to examine, view." The credit card of this name was introduced 1976, replacing BankAmericard.
Agnes: fem. proper name, mid-12c., from Old French Agnes, from Greek Hagne "pure, chaste," from fem. of hagnos "holy," from PIE *yag- "to worship, reverence" (see hagiology). St. Agnes, martyred 303 C.E., is patron saint of young girls, hence the folk connection of St. Agnes' Eve (Jan. 20-21) with love divinations. In Middle English, frequently phonetically as Annis, Annys. In U.S., among the top 50 names for girls born between 1887 and 1919.
diphtheria (n.): from French diphthérie, coined 1857 by physician Pierre Bretonneau (1778-1862) from Greek diphthera "prepared hide, leather," which is of unknown origin; the disease so called for the tough membrane that forms in the throat. Bretonneau's earlier name for it was diphthérite, Englished as diphtheritis (1826). Formerly known in England as the Boulogne sore throat, because it spread from France.
Alastor: in Greek tradition, son of Neleus, brother of Nestor, slain by Herakles. The name is perhaps literally "not to forget," from privative prefix a- "not" + root of lathein "to forget" (see Lethe), hence its use figuratively in sense of "an avenging spirit." Or else it might be connected with alaomai "to wander, roam," figuratively "to be distraught."
Albert: masc. proper name, from German (the French form is Aubert), from Old High German Adalbert, cognate of Old English Æþelbeorht "Noble-bright" (which was sometimes metathesized as Æþelbriht, hence the surname Albright). Second element is from Proto-Germanic berhta- "bright," from PIE *bhereg- "to shine; bright, white" (see bright). It also figures in the names Egbert, Gilbert, Herbert, Hubert, Lambert. As a kind of watch chain, from 1861 (see Prince Albert).
alchemy (n.): mid-14c., from Old French alchimie (14c.), alquemie (13c.), from Medieval Latin alkimia, from Arabic al-kimiya, from Greek khemeioa (found c.300 C.E. in a decree of Diocletian against "the old writings of the Egyptians"), all meaning "alchemy." Perhaps from an old name for Egypt (Khemia, literally "land of black earth," found in Plutarch), or from Greek khymatos "that which is poured out," from khein "to pour," related to khymos "juice, sap" [Klein, citing W. Muss-Arnolt, calls this folk etymology]. The word seems to have elements of both origins.
Mahn ... concludes, after an elaborate investigation, that Gr. khymeia was probably the original, being first applied to pharmaceutical chemistry, which was chiefly concerned with juices or infusions of plants; that the pursuits of the Alexandrian alchemists were a subsequent development of chemical study, and that the notoriety of these may have caused the name of the art to be popularly associated with the ancient name of Egypt. [OED]
The al- is the Arabic definite article, "the." The art and the name were adopted by the Arabs from Alexandrians and thence returned to Europe via Spain. Alchemy was the "chemistry" of the Middle Ages and early modern times; since c. 1600 the word has been applied distinctively to the pursuit of the transmutation of baser metals into gold, which, along with the search for the universal solvent and the panacea, were the chief occupations of early chemistry.
alder (n.): tree related to the birch, Old English alor "alder" (with intrusive -d- added 14c.; the historical form aller survived until 18c. in literary English and persists in dialects, such as Lancashire owler, which is partly from Norse), from Proto-Germanic *aliso (source also of Old Norse ölr, Danish elle, Swedish al, Dutch els, German erle), from *el-, the ancient PIE name of the tree (source also of Russian olicha, Polish olcha, Latin alnus, Lithuanian alksnis).
Alexander: masc. proper name, from Latin, from Greek Alexandros "defender of men," from alexein "to ward off, keep off, turn (something) away, defend, protect" + aner (genitive andros) "man" (see anthropo-). The first element is related to Greek alke "protection, help, strength, power, courage," alkimos "strong;" cognate with Sanskrit raksati "protects," Old English ealgian "to defend." As a kind of cocktail, it is attested from 1930.
diabetes (n.): 1560s, from medical Latin diabetes, from late Greek diabetes "excessive discharge of urine" (so named by Aretaeus the Cappadocian, physician of Alexandria, 2c.), literally "a passer-through, siphon," from diabainein "to pass through," from dia- "through" (see dia-) + bainein "to go" (see come).

An old common native name for it was pissing evil. In classical Greek, diabainein meant "to stand or walk with the legs apart," and diabetes meant "a drafting compass," from the position of the legs.
Diana: c. 1200, ancient Italian goddess of the moon, patroness of virginity and hunting, later identified with Greek Artemis, and through her with eastern goddesses such as Diana of Ephesus. The name is explained as *Diwjana, from *diw-yo-, from PIE root *dyeu- "to shine" (see Zeus) in reference to the shining moon, or from dius "godly."
nitrogen (n.): 1794, from French nitrogène, coined 1790 by French chemist Jean Antoine Chaptal (1756-1832), from comb. form of Greek nitron "sodium carbonate" (see nitro-) + French gène "producing," from Greek -gen "giving birth to" (see -gen). The gas was identified in part by analysis of nitre. Earlier name (1772) was mephitic air, and Lavoisier called it azote (see azo-).
equity (n.): early 14c., "quality of being equal or fair, impartiality in dealing with others," from Old French equite (13c.), from Latin aequitatem (nominative aequitas) "equality, uniformity, conformity, symmetry; fairness, equal rights; kindness, moderation," from aequus "even, just, equal" (see equal (adj.)). As the name of a system of law, 1590s, from Roman naturalis aequitas, the general principles of justice which corrected or supplemented the legal codes.
equivocation (n.): late 14c., "fallacy of using a word in different senses at different stages of the reasoning" (a loan-translation of Greek homonymia, literally "having the same name"), from Old French equivocation, from Late Latin aequivocationem (nominative aequivocatio), noun of action from aequivocus "of identical sound, of equal voice, of equal significance, ambiguous, of like sound," past participle of aequivocare, from aequus "equal" (see equal (adj.)) + vocare "to call" (see voice (n.)).
flack (n.): "publicity or press agent," 1945, also by that year as a verb, said to have been coined at show biz magazine "Variety" (but the first attested use is not in "Variety") and supposedly from name of Gene Flack, a movie agent, but influenced by flak. There was a Gene Flack who was an advertising executive in the U.S. during the 1940s, but he seems to have sold principally biscuits, not movies.
Fleming (n.): from Old English Flæming "native or inhabitant of Flanders," from Old Dutch Vlaemingh, Old Frisian Fleming, both from Proto-Germanic *Flam- (see Flanders). The Germanic name was borrowed in Medieval Latin as Flamingus, hence Spanish Flamenco, Provençal Flamenc, etc. French has flandrin "a lanky lad" (15c.), originally a nickname of a Fleming, thence "any tall and meagre man," as they were thought to be [Kitchin].
floe (n.): 1817, first used by Arctic explorers, probably from Norwegian flo "layer, slab," from Old Norse flo, from Proto-Germanic *floho-, from PIE *plak- (1) "to be flat," extended form of root *pele- (2) "flat, to spread" (see plane (n.1)). Related to first element in flagstone. Earlier explorers used flake. Floe-rat was a seal-hunter's name for the ringed seal (1880).
gondola (n.): 1540s, "long, narrow flat-bottomed boat used in Venice," from Italian (Venetian) gondola, earlier in English as goundel, from Old Italian gondula, of unknown origin; according to Barnhart, perhaps a diminutive of gonda, a name of a kind of boat. Used of flat, open railway cars by 1871. Meaning "cabin of an airship" is from 1896, though it was used hypothetically in 1881 in a futurism piece titled "300 Years Hence." Of ski-lifts from 1957.
goo-goo (adj.): "amorous," 1900, perhaps connected with goggle, because the earliest reference is in goo-goo eyes. Use in reference to politics is from 1890s and seems to be a shortening of Good Government as the name of a movement to clean up municipal corruption in Boston, New York, etc. It soon was extended to mean "naive political reformer." Goo-goo as imitative of baby-talk is from 1863.
gorgeous (adj.): c. 1500, "splendid, showy, sumptuously adorned" (of clothing), from Middle French gorgias "elegant, fashionable," of unknown origin; perhaps a special use of gorgias "necklace" (and thus "fond of or resembling jewelry"), from Old French gorge "throat," also "something adorning the throat" (see gorge (n.)). A connection to the Greek proper name Gorgias (supposedly in reference to a notorious sophist) also has been proposed. Related: Gorgeousness.
Gotham (n.): "New York City," first used by Washington Irving in "Salmagundi" (1807), based on "Merrie Tales of the Mad Men of Gotham" (1460), a collection of legendary stories of English villagers alternately wise and foolish. There is a village of this name in Nottinghamshire, originally Gatham (1086), in Old English, "Enclosure (literally 'homestead') where goats are kept." It is unknown if this was the place intended in the stories. Related: Gothamite.
Gradus ad Parnassum (n.): Latin, literally "A Step to Parnassus," the mountain sacred to Apollo and the Muses. It was the title of a dictionary of prosody used in English public schools for centuries as a guide to Roman poetry. The book dates from the 1680s. Also the name of a treatise on musical composition written in Latin by Johann Joseph Fux, published in Vienna in 1725, and of a much-used book of exercises for piano.
hellebore (n.): late 14c., from Old French ellebore, from Latin elleborus, from Greek helleboros, the name given to various plants of both poisonous and medicinal qualities, reputed to cure madness; of uncertain origin. Perhaps literally "plant eaten by fawns," from Greek ellos/hellos "fawn" (from PIE *elno-, extended form of *el- (2) "red, brown," in animal and tree names; see elk) + bora "food of beasts," from bibroskein "to eat," from PIE root *gwere- (4) "to swallow" (see voracity). Related: Helleboric; helleboraceous.
Hellenic (adj.): "pertaining to Greece," 1640s, from Greek Hellenikos "Hellenic, Greek," from Hellen "a Greek," of unknown origin. Earliest surviving use is by Homer in reference to a Thessalian tribe; traditionally from the name of an eponymous ancestor, Hellen, son of Deucalion. In modern use in the arts, of Greek work from the close of the primitive phase to the time of Alexander the Great or the Roman conquest.
hemp (n.): Old English hænep "hemp, cannabis sativa," from Proto-Germanic *hanapiz (source also of Old Saxon hanap, Old Norse hampr, Old High German hanaf, German Hanf), probably a very early Germanic borrowing of the same Scythian word that became Greek kannabis (see cannabis). As the name of the fiber made from the plant, by c. 1300. Slang sense of "marijuana" dates from 1940s; scientific applications for the narcotic derived from hemp date to 1870.
Herefordshire: Old English Herefordscir, from Hereford (958), literally "ford suitable for the passage of an army" (see harry (v.) + ford (n.). Probably so-called in reference to the Roman road passing over the Wye River. Herford in Germany has the same etymology. As the name for a type of cattle, first bred there, it is attested from 1789.
flux (n.): late 14c., "abnormally copious flow," from Old French flus "a flowing, a rolling; a bleeding" (Modern French flux), or directly from Latin fluxus (adj.) "flowing, loose, slack," past participle of fluere "to flow" (see fluent). Originally "excessive flow" (of blood or excrement), it also was an early name for "dysentery;" sense of "continuous succession of changes" is first recorded 1620s. The verb is early 15c., from the noun.
glucose (n.): name of a group of sugars (in commercial use, "sugar-syrup from starch"), 1840, from French glucose (1838), said to have been coined by French professor Eugène Melchior Péligot (1811-1890) from Greek gleukos "must, sweet wine," related to glykys "sweet" (see gluco-). It first was obtained from grape sugar. Related: Glucosic.
herpes (n.): late 14c., "any inflammatory, spreading skin condition" (used of shingles, gangrene, etc.), from Latin herpes "a spreading skin eruption," from Greek herpes, the name for the disease shingles, literally "creeping," from herpein "to creep, move slowly" (cognate with Latin serpere "to creep;" see serpent). The condition was not distinguished into specific diseases until early 19c.
hickory (n.): type of North American tree valued for its edible nuts and tough, flexible wood, 1670s, American English, from Algonquian (perhaps Powhatan), shortening of pockerchicory, pocohicora or a similar word, which is sometimes said to be the name for this species of walnut, but Bright calls it "a milky drink made from hickory nuts." Old Hickory as the nickname of U.S. politician Andrew Jackson is recorded from 1815.
interlocutor (n.): 1510s, "one who speaks in a dialogue or conversation," agent noun from Latin interlocut-, past participle stem of interloqui "speak between; interrupt," from inter- "between" (see inter-) + loqui "to speak" (see locution).

In minstrel shows, the name of a straight-man character (1870) who was the questioner of the end men. Related: Interlocutory. Fem. forms include interlocutress (1858), interlocutrix (1846), interlocutrice (1848).
epigraph (n.): 1620s, "inscription on a building, statue, etc.," from Greek epigraphe "an inscription," from epigraphein "to mark the surface, just pierce; write on, inscribe; to register; inscribe one's name, endorse," from epi "on" (see epi-) + graphein "to write" (see -graphy). Sense of "motto; short, pithy sentence at the head of a book or chapter" first recorded in English 1844. Related: Epigraphic; epigraphical.
epilepsy (n.): 1570s, from Middle French epilepsie (16c.), from Late Latin epilepsia, from Greek epilepsis "epilepsy," literally "a seizure," from epilambanein "to lay hold of, seize upon, attack," especially of diseases, but also of events, armies, etc., from epi "upon" (see epi-) + lepsis "seizure," from leps-, future stem of lambanein "take hold of, grasp" (see analemma). Earlier was epilencie (late 14c.), from Middle French epilence, a variant form influenced by pestilence. The native name in English was falling sickness.
epithet (n.): "descriptive name for a person or thing," 1570s, from Middle French épithète or directly from Latin epitheton (source also of Spanish epíteto, Portuguese epitheto, Italian epiteto), from Greek epitheton "an epithet; something added," noun use of adjective (neuter of epithetos) "attributed, added, assumed," from epitithenai "to add on," from epi "in addition" (see epi-) + tithenai "to put" (see theme). Related: Epithetic; epithetical.
marijuana (n.): 1918, altered by influence of Spanish proper name Maria Juana "Mary Jane" from mariguan (1894), from Mexican Spanish marihuana, of uncertain origin.
Marijuana ... makes you sensitive. Courtesy has a great deal to do with being sensitive. Unfortunately marijuana makes you the kind of sensitive where you insist on everyone listening to the drum solo in Iron Butterfly's 'In-a-Gadda-Da-Vida' fifty or sixty times. [P.J. O'Rourke, "Modern Manners," 1983]
Marsellaise (n.): French national republican song, 1826, from fem. of adjective Marseillais "of Marseilles." The tune originally was "War Song for the Rhine Army," composed (for the Strasbourg volunteers) by royalist officer Capt. Claude Joseph Rouget de Lisle (1760-1836); current name is because it was sung enthusiastically by soldiers from Marseilles advancing on the Tuileries, Aug. 10, 1792.
martin (n.): kind of swallow-like bird (Chelidon urbica), 1580s, from Scot. martoune (mid-15c.), from Middle French martin, from the masc. proper name in some sense. Writers in 17c. said it was named for St. Martin of Tours (d. 397 C.E.), whose festival day (Martinmas) is Nov. 11, about the time the birds depart.
masochism (n.): "sexual pleasure in being hurt or abused," 1892, from German Masochismus, coined 1883 by German neurologist Richard von Krafft-Ebing (1840-1902), from name of Leopold von Sacher-Masoch (1836-1895), Austrian utopian socialist novelist who enshrined his submissive sexuality in "Venus in Furs" (1869, German title "Venus im Pelz").
nurse (n.1): 12c., nurrice "wet-nurse, foster-mother to a young child" (modern form from late 14c.), from Old French norrice "foster-mother, wet-nurse, nanny" (source of proper name Norris), from Late Latin *nutricia "nurse, governess, tutoress," noun use of fem. of Latin nutricius "that suckles, nourishes," from nutrix (genitive nutricis) "wet-nurse," from nutrire "to suckle" (see nourish). Meaning "person who takes care of sick" in English first recorded 1580s.
orthodox (adj.): mid-15c., of opinions, faith, from Late Latin orthodoxus, from Greek orthodoxos "having the right opinion," from orthos "right, true, straight" (see ortho-) + doxa "opinion, praise," from dokein "to seem," from PIE root *dek- "to take, accept" (see decent). As the name of the Eastern Church, first recorded in English 1772; in reference to a branch of Judaism, first recorded 1853.
mastodon (n.): 1813, from Modern Latin genus name Mastodon (1806), coined by French naturalist Georges Léopole Chrétien Frédéric Dagobert, Baron Cuvier (1769-1832) from Greek mastos "breast" (see masto-) + -odon "tooth" (see tooth); so called from the nipple-like projections on the crowns of the extinct mammal's fossil molars. Related: Mastodontic.
Noel (n.): late 14c., nowel "feast of Christmas," from Old French noel "the Christmas season," variant of nael, from Latin natalis (dies) "birth (day)," in Church Latin in reference to the birthday of Christ, from natus, past participle of nasci "be born" (Old Latin gnasci; see genus). The modern word in English, with the sense "a Christmas carol" (1811) probably is a separate borrowing from French. As a masc. proper name, from Old French, probably literally "of or born on Christmas."
pax (n.): mid-15c., "kiss of peace," from Latin pax (genitive pacis) "peace," in Ecclesiastical Latin, "kiss of peace" (see peace). Capitalized, Pax was the name of the Roman goddess of peace. Used by 1933 with adjectives from national names, on model of Pax Romana (such as Pax Britannica, 1872; Pax Americana, 1886, with reference to Latin America).
Owen: Celtic masc. proper name, ultimately from Greek eugenes "well-born;" via Gaelic Eòghann, Old Irish Eogán, Old Welsh Eugein, Ougein. In Medieval records, frequently Latinized as Eugenius; the form Eugene emerged in Scotland by late 12c. The Breton form Even led to modern French Ivain. Owenite in reference to the communistic system of social reformer Robert Owen (1771-1858) is attested from 1829.
Thermos (n.): trademark registered in Britain 1907, invented by Sir James Dewar (patented 1904 but not named then), from Greek thermos "hot" (see thermal). Dewar built the first one in 1892, but it was first manufactured commercially in Germany in 1904, when two glass blowers formed Thermos GmbH. Supposedly the company sponsored a contest to name the thing, and a Munich resident won with a submission of Thermos.
wolfram (n.): 1757, from German Wolfram, wolform "iron tungstate" (1562), of obscure etymology. It looks like "wolf-cream" (from rahm "cream"), but the second element might be Middle High German ram (German Rahm) "dirty mark, soot;" if so, perhaps "so called in sign of contempt because it was regarded of lesser value than tin and caused a considerable loss of tin during the smelting process in the furnace" [Klein]. Or perhaps the word is originally a personal name, "wolf-raven."
wood (adj.): "violently insane" (now obsolete), from Old English wod "mad, frenzied," from Proto-Germanic *woda- (source also of Gothic woþs "possessed, mad," Old High German wuot "mad, madness," German wut "rage, fury"), from PIE *wet- (1) "to blow; inspire, spiritually arouse;" source of Latin vates "seer, poet," Old Irish faith "poet;" "with a common element of mental excitement" [Buck]. Compare Old English woþ "sound, melody, song," Old Norse oðr "poetry," and the god-name Odin.
almighty (adj.): Old English ælmihtig "all-powerful," also a by-name of God; compound of æl (see all) + mihtig (see mighty); common Germanic (cognates: Old Saxon alomahtig, Old High German alamahtic, German allmächtig, Old Norse almattigr), perhaps an early Germanic loan-translation of Latin omnipotens (see omnipotent).
The almighty dollar, that great object of universal devotion throughout our land. [Washington Irving, 1836]
Related: Almightily.
amaranth (n.): 1610s, from French amarante, from Latin amarantus, from Greek amarantos, name of an unfading flower, literally "everlasting," from a- "not" + stem of marainein "die away, waste away, quench, extinguish," from PIE *mer- "to rub away, harm" (see nightmare). In classical use, a poet's word for an imaginary flower that never fades. It was applied to a genus of ornamental plants 1550s. Ending influenced by plant names with Greek -anthos "flower."
Ameslan (n.): 1972, acronym of Ame(rican) S(ign) Lan(guage), known by that name since 1960, but its history goes back to 1817, evolving from French Sign Language (introduced at American School for the Deaf in Hartford, Conn.) and indigenous sign languages, especially that of Martha's Vineyard. [See "Everyone Here Spoke Sign Language," Nora Ellen Groce, Harvard University Press, 1985]
amnesty (n.): "pardon of past offenses," 1570s, from French amnestie "intentional overlooking," from Latin amnestia, from Greek amnestia "forgetfulness (of wrong); an amnesty," from a-, privative prefix, "not" (see a- (3)), + mnestis "remembrance," related to mnaomai "I remember" (see mind (n.)). As a verb, from 1809. Amnesty International founded 1961 as Appeal for Amnesty. The name was changed 1963.