Diapsid Definition
dī-ăpsĭd
noun
Any of a group of amniote vertebrates that are characterized by two openings in the temporal region on each side of the skull. The first diapsids emerged in the Pennsylvanian Period, and their descendants include the lizards, snakes, crocodiles, dinosaurs, pterosaurs, birds, and, in some classifications, the turtles.
American Heritage
Synonyms:
- diapsid reptile
Antonyms:
Other Word Forms of Diapsid
Noun
Singular:
diapsidPlural:
diapsidsOrigin of Diapsid
-
New Latin Diapsida taxon name di– Greek hapsis hapsid- arch (from the two temporal openings on each side of the skull) apsis
From American Heritage Dictionary of the English Language, 5th Edition
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