cyclotron=السيكلوترون

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cyclotron=السيكلوترون

ONLINE ETYMOLOGY DICTIONARY

cyclotron (n.)

1935, from cyclo- + ending from electron.

cyclo- 

before a vowel, cycl-, word-forming element meaning "circle, ring, rotation," from Latinized form of Greek kyklo-, comb. form of kyklos "circle, wheel, ring" (see cycle (n.)).

cycle (n.)

late 14c., from Late Latin cyclus, from Greek kyklos "circle, wheel, any circular body, circular motion, cycle of events," from PIE *kwel- "to roll, to move around, wheel" (cf. Sanskrit cakram "circle, wheel," carati "he moves, wanders;" Avestan caraiti "applies himself," c'axra "chariot, wagon;" Greek polos "a round axis" (PIE *kw- becomes Greek p- before some vowels), polein "move around;" Latin colere "to frequent, dwell in, to cultivate, move around," cultus "tended, cultivated," hence also "polished," colonus "husbandman, tenant farmer, settler, colonist;" Lithuanian kelias "a road, a way;" Old Norse hvel, Old English hweol "wheel;" Old Russian kolo, Polish koło, Russian koleso "a wheel").

electron (n.)

coined 1891 by Irish physicist George J. Stoney (1826-1911) from electric + -on, as in ion (q.v.). Electron microscope translates Ger. Elektronenmikroskop (1932).

electric (adj.)

1640s, first used in English by physician Sir Thomas Browne (1605-1682), apparently coined as Mod.L. electricus (lit. "resembling amber") by English physicist William Gilbert (1540-1603) in treatise "De Magnete" (1600), from L. electrum "amber," from Gk. elektron "amber" (Homer, Hesiod, Herodotus), also "pale gold" (a compound of 1 part silver to 4 of gold); of unknown origin. Originally the word described substances which, like amber, attract other substances when rubbed. Meaning "charged with electricity" is from 1670s; the physical force so called because it first was generated by rubbing amber. In many modern instances, the word is short for electrical. Figurative sense is attested by 1793. Electric toothbrush first recorded 1936; electric typewriter 1958.