WordReference Random House Unabridged Dictionary of American English © 2025
a•nap•sid
(ə nap′sid),USA pronunciation adj.
n.
- Reptilesbelonging or pertaining to the Anapsida, a subclass of reptiles, extinct except for the turtles, characterized by having no opening in the temporal region of the skull.
n.
- Reptilesa reptile of the subclass Anapsida. Cf. diapsid.
- Neo-Latin Anapsida, equivalent. to an- an-1 + -apsida, plural of -apsidum, neuter adjective, adjectival derivative of Greek apsís, hapsís loop, arch (referring to the opening in the skull); see apsis
- 1930–35
'anapsid' also found in these entries (note: many are not synonyms or translations):