英语词汇yeast的起源、历史背景-英语词源词典

词汇	yeast
词源	yeast n. Old English gist "yeast, froth," from Proto-Germanic jest- (source also of Old Norse jastr, Swedish jäst, Middle High German gest, German Gischt "foam, froth," Old High German jesan, German gären "to ferment"), from PIE root yes- "to boil, foam, froth" (source also of Sanskrit yasyati "boils, seethes," Greek zein "to boil," Welsh ias "seething, foaming"). Entries linking to yeast eczema n. 1753, from Greek ekzema, literally "something thrown out by heat," from ekzein "to boil over, break out," from ek "out" (see ex-) + zein "to boil," from PIE root *yes- "to boil, foam, bubble" (see yeast). Said to have been the name given by ancient physicians to "any fiery pustule on the skin" [Chambers' "Cyclopaedia"]. yeasty adj. 1590s, from yeast + -y (2). updated on April 13, 2014
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yeast n.