yesterdayyoudaoicibaDictYouDict[yesterday 词源字典]
yesterday: [OE] The yester- of yesterday (and of yesteryear [19], coined by Dante Gabriel Rossetti) was originally a free-standing word, meaning ‘yesterday’, but by the time records of it in Old English begin it was already locked into a collocation with day. Its ultimate source is Indo-European *ghes, which also produced Latin herī (source of French hier, Italian and Romanian ieri, and Spanish ayer), Welsh doe, German gestern, and Dutch gisteren.
[yesterday etymology, yesterday origin, 英语词源]
polyester (n.)youdaoicibaDictYouDict
1929, formed from polymer + ester. Polyester fiber was discovered 1941.
yester-youdaoicibaDictYouDict
Old English geostran "yesterday," from Proto-Germanic *gester- (cognates: Old High German gestaron, German gestern "yesterday," Old Norse gær "tomorrow, yesterday," Gothic gistradagis "tomorrow"), originally "the other day" (reckoned from "today," either backward or forward), from PIE root *dhgh(y)es- "yesterday" (cognates: Sanskrit hyah, Avestan zyo, Persian di, Greek khthes, Latin heri, Old Irish indhe, Welsh doe "yesterday;" Latin hesternus "of yesterday").
yesterday (n., adv.)youdaoicibaDictYouDict
Old English geostran dæg; see yester- + day.
yesternight (n., adv.)youdaoicibaDictYouDict
Old English gystran niht; see yester- + night.
yesteryear (n.)youdaoicibaDictYouDict
coined 1870 by Dante Gabriel Rossetti from yester- + year to translate French antan (from Vulgar Latin *anteannum "the year before") in a refrain by François Villon: Mais ou sont les neiges d'antan? which Rossetti rendered "But where are the snows of yesteryear?"