acrodontyoudaoicibaDictYouDict[acrodont 词源字典]
"An animal, especially a reptile, whose teeth lack sockets and are permanently attached to the summit of the alveolar ridge of the jaw", Mid 19th cent.; earliest use found in The Penny Cyclopaedia. From scientific Latin acrodontes, plural from acro- + ancient Greek -οδόντ-, -όδους.[acrodont etymology, acrodont origin, 英语词源]