trauma (n.)youdaoicibaDictYouDict[trauma 词源字典]
1690s, "physical wound," medical Latin, from Greek trauma "a wound, a hurt; a defeat," from PIE *trau-, extended form of root *tere- (1) "to rub, turn," with derivatives referring to twisting, piercing, etc. (see throw (v.)). Sense of "psychic wound, unpleasant experience which causes abnormal stress" is from 1894.[trauma etymology, trauma origin, 英语词源]