Antonyms of noun diapsid

1 sense of diapsid

Sense 1
diapsid, diapsid reptile -- (reptile having a pair of openings in the skull behind each eye)
       Antonym of anapsid (Sense 1)
      => anapsid, anapsid reptile -- (primitive reptile having no opening in the temporal region of the skull; all extinct except turtles)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun diapsid

1 sense of diapsid

Sense 1
diapsid, diapsid reptile -- (reptile having a pair of openings in the skull behind each eye)
       => reptile, reptilian -- (any cold-blooded vertebrate of the class Reptilia including tortoises, turtles, snakes, lizards, alligators, crocodiles, and extinct forms)