opponens pollicisyoudaoicibaDictYouDict[opponens pollicis 词源字典]
"A muscle of the hand, originating from the trapezium and flexor retinaculum and inserting into the first metacarpal, which serves to cup the palm and assist in the opposing of the thumb to the other fingers", Mid 18th cent. From scientific Latin opponens pollicis from classical Latin oppōnēns, + pollicis, genitive singular of pollex thumb.[opponens pollicis etymology, opponens pollicis origin, 英语词源]