英语词源字典 - 在线词源网站

eureka [eureka 词源字典]: eureka: [16] The Greek mathematician Archimedes (c. 287–212 BC) was commissioned by King Hiero II of Syracuse to find out whether the goldsmith who had made a new crown for him had fraudulently mixed some silver in with the gold. In order to do so, Archimedes needed to ascertain the metal’s specific gravity. But how to do this? According to Plutarch, he decided to take a bath to ponder the problem.

He filled the bath too full, and some of the water overflowed – and it suddenly occurred to Archimedes that a pure-gold crown would displace more water if immersed than one made from an alloy. Elated at this piece of lateral thinking, Archimedes is said to have leapt out of the bath shouting heúrēka! ‘I have found!’, the perfect indicative of Greek heurískein ‘find’ (source of English heuristic [19]).

The earliest occurrence of the word in an English text as an exclamation of delight at discovery is in John Dee’s Preface, but there it appears in Greek characters; the first English author to fully naturalize it was probably Henry Fielding in Joseph Andrews 1742; ‘Adams returned overjoyed cring out “Eureka!”’ (The goldsmith, incidentally, had adulterated the gold.)
=> heuristic[eureka etymology, eureka origin, 英语词源]
indigo: indigo: [16] Etymologically indigo, a blue dye, is the ‘Indian dye’ – so named because supplies of it were obtained from India. The term is an ancient one. It originated in Greek indikón, literally the ‘Indian substance’, a derivative of the adjective Indikós ‘Indian’, and passed via Latin indicum and Spanish indico into English as indico.

This was replaced in the 17th century by the Portuguese form indigo, and it was Portuguese influence, stemming from their commercial activities in India, that really established the term among the European languages (hitherto the commoner term for the dye had been anil, a word of Sanskrit origins). (The name India, incidentally, to which indigo is related, comes ultimately from Old Persian hiñd’u, which originally meant ‘river’, was subsequently applied specifically to the river Indus, and finally became the name for the country through which the Indus flowed.)
=> india
canny (adj.): 1630s, Scottish and northern English formation from can (v.1) in its sense of "know how to," + -y (2). "Knowing," hence, "careful." A doublet of cunning that flowed into distinct senses. Often used superciliously of Scots by their southern neighbors (and their American cousins).
The Canny Scot is so well known as scarcely to require description. He carries caution, cunning, and selfishness to excess. Deceitful when a purpose is to be accomplished, he is not habitually deceitful. One thing he never loses sight of--his own interest. But of his own interest he is not the most enlightened judge. ["The Natural History of Scotsmen," in "The Argosy," December 1865]
Related: Cannily; canniness.
flow (v.): Old English flowan "to flow, stream, issue; become liquid, melt; abound, overflow" (class VII strong verb; past tense fleow, past participle flowen), from Proto-Germanic *flowan "to flow" (cognates: Middle Dutch vloyen, Dutch vloeien, vloeijen "to flow," Old Norse floa "to deluge," Old High German flouwen "to rinse, wash"), probably from PIE *pleu- "flow, float" (see pluvial). The weak form predominated from 14c., but strong past participle flown is occasionally attested through 18c. Related: Flowed; flowing.
Hesperus: late 14c., poetic for "the evening star," from Latin Hesperus, from Greek hesperos (aster) "western (star)," from PIE *wes-pero- "evening, night" (see vesper). Hence also Hesperides (1590s), from Greek, "daughters of the West," the nymphs (variously numbered but originally three) who tended the garden with the golden apples. Their name has been mistakenly transferred to the garden itself.
The Hesperides were daughters of Atlas, an enormous giant, who, as the ancients believed, stood upon the western confines of the earth, and supported the heavens on his shoulders. Their mother was Hesperis, a personification of the "region of the West," where the sun continued to shine after he had set on Greece, and where, as travellers told, was an abundance of choice delicious fruits, which could only have been produced by a special divine influence. The Gardens of the Hesperides with the golden apples were believed to exist in some island in the ocean, or, as it was sometimes thought, in the islands on the north or west coast of Africa. They were far-famed in antiquity; for it was there that springs of nectar flowed by the couch of Zeus, and there that the earth displayed the rarest blessings of the gods; it was another Eden. As knowledge increased with regard to western lands, it became necessary to move this paradise farther and farther out into the Western Ocean. [Alexander Murray, "Manual of Mythology," 1888]
like (v.): Old English lician "to please, be sufficient," from Proto-Germanic *likjan (cognates: Old Norse lika, Old Frisian likia, Old High German lihhen, Gothic leikan "to please"), from *lik- "body, form; like, same."

The basic meaning seems to be "to be like" (see like (adj.)), thus, "to be suitable." Like (and dislike) originally flowed the other way: It likes me, where we would say I like it. The modern flow began to appear late 14c. (compare please).
ocean (n.): late 13c., from Old French occean "ocean" (12c., Modern French océan), from Latin oceanus, from Greek okeanos, the great river or sea surrounding the disk of the Earth (as opposed to the Mediterranean), of unknown origin. Personified as Oceanus, son of Uranus and Gaia and husband of Tethys. In early times, when the only known land masses were Eurasia and Africa, the ocean was an endless river that flowed around them. Until c. 1650, commonly ocean sea, translating Latin mare oceanum. Application to individual bodies of water began 14c.; there are usually reckoned to be five of them, but this is arbitrary; also occasionally applied to smaller subdivisions, such as German Ocean "North Sea."
overflow (v.): Old English oferfleow "to flow across, flood, inundate," also "to flow over (a brim or bank);" see over- + flow (v.). Related: Overflowed; overflowing.
unreal (adj.): c. 1600, "not real," from un- (1) "not" + real (adj.). Meaning "impractical, visionary" is by 1660s. Slang sense of "wonderful, great" is first recorded 1965.
Unreal City,
Under the brown fog of a winter dawn,
A crowd flowed over London Bridge, so many,
I had not thought death had undone so many.

[Eliot, "The Waste Land," 1922]
wadi (n.): "watercourse," 1839, from Arabic wadi "seasonal watercourse," prop. participle of wada "it flowed." It forms the Guadal- in Spanish river names.
fluxion: "A function corresponding to the rate of change of a variable quantity; a derivative", Late 17th century: from French, or from Latin flux- 'flowed', from the verb fluere.