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1. (n.) therapsid
any of various mammallike reptiles of the extinct order Therapsida, inhabiting all continents from mid-Permian to late Triassic times.
Etymology: (< NL Therapsida (1905) = Gk thēr-, s. of thēr wild beast +apsid-, s. of apsís arch, vault (referring to the temporal arch of the skull) + NL -a neut. pl. ending (see -a1))
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| Definition of 'therapsid' |
Princeton's WordNet |
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1. (noun) therapsid, protomammal
probably warm-blooded; considered direct ancestor of mammals
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Definitions of therapsid 
