coelurosaur

coe·lur·o·saur

 (sē-lo͝or′ə-sôr′)

n.

Any of various theropod dinosaurs of the diverse group Coelurosauria of the Jurassic and Cretaceous Periods, having a stiff tail, hingelike ankle, usually long forelimbs, and sometimes featherlike structures, and including oviraptor and T. rex.

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[From New Latin Coelūrosauria, group name : Greek koilos, hollow; see keuə- in Indo-European roots + Greek ourā, tail; see ors- in Indo-European roots + Greek sauros, lizard.]

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coe·lur′o·saur′i·an adj. & n.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

coelurosaur

(sɪˈljʊərəˌsɔː)

n

(Palaeontology) any of various small to very large bipedal carnivorous saurischian dinosaurs belonging to the suborder Theropoda, active in the Triassic and Cretaceous periods; Tyrannosaurus was a coelurosaur, and birds are thought to have evolved from small coelurosaurs

[C20: from New Latin, from Greek koilos hollow + ouros tail + -saur]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014