Source : Webster's Revised Unabridged Dictionary (1913)

Crocodilian \Croc`o*dil"i*an\ (kr?k`?-d?l"?-a]/>n), a.
   (Zo["o]l.)
   Like, or pertaining to, the crocodile; characteristic of the
   crocodile. -- n. One of the Crocodilia.

Source : WordNet®

crocodilian
     n : extant archosaurian reptile [syn: {crocodilian reptile}]