Entry 1 sense Webster, 1913 Crocodilian /(kr?k`?-d?l"?-an)/ · Croc·o·dil·i·an · IPA /ˌkɹɒkəˈdɪliən/ 01 a. Like, or pertaining to, the crocodile; characteristic of the crocodile. 1. Like, or pertaining to, the crocodile; characteristic of the crocodile.(Zool.)