paresis (n.)youdaoicibaDictYouDict[paresis 词源字典]
"partial paralysis," 1690s, Modern Latin, from Greek paresis "letting go, slackening of strength, paralysis," from stem of parienai "to let go," from para- (see para- (1)) + hienai "to send, throw" (see jet (v.)).[paresis etymology, paresis origin, 英语词源]