"Of a snake's tooth: solid and unspecialized, without a groove for venom. Of a snake: having such teeth; specifically belonging to the former division Aglypha (approximating to the large subfamily Colubrinae of harmless colubrids)", Late 19th cent. From either French aglyphe or scientific Latin Aglypha + -ous.[aglyphous etymology, aglyphous origin, 英语词源]