pleiotropy (n.)youdaoicibaDictYouDict[pleiotropy 词源字典]
1921, from German pleiotrop (1910), from Greek pleion "greater in quantity, the more part, very many," (see pleio-) + trope "turn, turning" (see trope). Related: Pleiotropic; pleiotropism.[pleiotropy etymology, pleiotropy origin, 英语词源]