therapsid

[ thuh-rap-sid ]

/ θəˈræp sɪd /

noun

any of various groups of mammallike reptiles of the extinct order Therapsida, inhabiting all continents from mid-Permian to late Triassic times, some of which were probably warm-blooded and directly ancestral to mammals.

adjective

of or relating to the Therapsida.

Origin of therapsid

<New Latin Therapsida (1905), equivalent to Greek thēr- (stem of thḗr wild beast) + apsid- (stem of apsís arch, vault, referring to the temporal arch of the skull) + New Latin -a neuter plural ending (see -a¹)

Words nearby therapsid

therapeutic index, therapeutic ratio, therapeutics, therapeutic virus, therapist, therapsid, therapy, therapy animal, Theravada, Theravadin, Raven, The

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for therapsid

therapsid

/ (θəˈræpsɪd) /

noun

any extinct reptile of the order Therapsida, of Permian to Triassic times: considered to be the ancestors of mammals

Word Origin for therapsid

C20: from New Latin Therapsida, from Greek thēr beast + Latin apsis arch

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for therapsid

therapsid

[ thə-răp′sĭd ]

Any of a group of amniotes that emerged in the Permian Period. Therapsids developed differentiated dentition, with nipping, biting, and crushing teeth, and (unlike diapsids) had forelimbs that were more greatly developed than hindlimbs. Therapsids include the so-called mammallike reptiles of the Permian and Triassic Periods, as well as mammals. Compare anapsid diapsid synapsid.

单词	therapsid
释义	therapsid [ thuh-rap-sid ] / θəˈræp sɪd / noun any of various groups of mammallike reptiles of the extinct order Therapsida, inhabiting all continents from mid-Permian to late Triassic times, some of which were probably warm-blooded and directly ancestral to mammals. adjective of or relating to the Therapsida. Origin of therapsid <New Latin Therapsida (1905), equivalent to Greek thēr- (stem of thḗr wild beast) + apsid- (stem of apsís arch, vault, referring to the temporal arch of the skull) + New Latin -a neuter plural ending (see -a¹) Words nearby therapsid therapeutic index, therapeutic ratio, therapeutics, therapeutic virus, therapist, therapsid, therapy, therapy animal, Theravada, Theravadin, Raven, The Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for therapsid therapsid / (θəˈræpsɪd) / noun any extinct reptile of the order Therapsida, of Permian to Triassic times: considered to be the ancestors of mammals Word Origin for therapsid C20: from New Latin Therapsida, from Greek thēr beast + Latin apsis arch Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for therapsid therapsid [ thə-răp′sĭd ] Any of a group of amniotes that emerged in the Permian Period. Therapsids developed differentiated dentition, with nipping, biting, and crushing teeth, and (unlike diapsids) had forelimbs that were more greatly developed than hindlimbs. Therapsids include the so-called mammallike reptiles of the Permian and Triassic Periods, as well as mammals. Compare anapsid diapsid synapsid. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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