First Known Use: 1912
Dictionary
therapsid
noun the·rap·sid \thə-ˈrap-səd\
Definition of THERAPSID
: any of an order (Therapsida) of Permian and Triassic synapsid reptiles considered ancestors of the mammals
— therapsid adjective
ADVERTISEMENT
Origin of THERAPSID
Learn More About THERAPSID
Browse
Next Word in the Dictionary: TherapsidaPrevious Word in the Dictionary: theraponAll Words Near: therapsid
ADVERTISEMENT
Seen & Heard
What made you want to look up therapsid? Please tell us where you read or heard it (including the quote, if possible).