anapsid

/əˈnæpsəd/

Definitions of anapsid

1. noun

   primitive reptile having no opening in the temporal region of the skull; all extinct except turtles
   synonyms: anapsid reptile

   antonyms:

   diapsid

   reptile having a pair of openings in the skull behind each eye

   types:

   chelonian, chelonian reptile

   a reptile of the order Chelonia

   turtle

   any of various aquatic and land reptiles having a bony shell and flipper-like limbs for swimming

   type of:

   reptile, reptilian

   any cold-blooded vertebrate of the class Reptilia including tortoises, turtles, snakes, lizards, alligators, crocodiles, and extinct forms