apodal (adj.)youdaoicibaDictYouDict[apodal 词源字典]
1769, with -al + Greek apous (genitive apodos) "footless," from a-, privative prefix (see a- (3)) + pous "foot," from PIE root *ped- (1) "a foot" (see foot (n.)).[apodal etymology, apodal origin, 英语词源]