What does "diapsid" mean?

Any of very many reptiles, of the subclass Diapsida, that have a pair of openings in the skull behind each eye

What is a synonym for "diapsid"?

Common synonyms include: diapsid reptile.

noun

noun ·3 syllables ·Rare ·Advanced level

Noun

1
Any of very many reptiles, of the subclass Diapsida, that have a pair of openings in the skull behind each eye
2
reptile having a pair of openings in the skull behind each eye wordnet

Clipping of taxonomic name Diapsida.