spirochete (n.)youdaoicibaDictYouDict[spirochete 词源字典]
1877, from Modern Latin Spirochæta, the genus name, from spiro- Modern Latin comb. form of Greek speira "a coil" (see spiral (adj.)) + Greek khaite "hair" (see chaeto-).[spirochete etymology, spirochete origin, 英语词源]