pentandrousyoudaoicibaDictYouDict[pentandrous 词源字典]
"Originally: †designating or belonging to the Linnaean class or order Pentandria ( obsolete ). In later use: having five stamens", Mid 18th cent.; earliest use found in John Hill (bap. 1714, d. 1775), physician and actor. From penta- + -androus, after scientific Latin pentandrus.[pentandrous etymology, pentandrous origin, 英语词源]