[ ang-kuh-loh-sawr ]
/ ˈæŋ kə loʊˌsɔr /


any of several herbivorous dinosaurs of the suborder Ankylosauria, from the Cretaceous Period, having the body covered with thick, bony plates.


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Also called armored dinosaur.

Origin of ankylosaur

First recorded in 1905–10, ankylosaur is from the New Latin word Ankylosauria name of the suborder. See ankylo-, -saur, -ia Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for ankylosaur

  • The Polacanthus and Ankylosaur developed a most effective armour-plating over the rear.

British Dictionary definitions for ankylosaur

/ (ˈæŋkɪləʊˌsɔː) /


any of various quadrupedal herbivorous ornithischian dinosaurs constituting the suborder Ankylosauria, which were most abundant in upper Cretaceous times and had a very heavily armoured tanklike body

Word Origin for ankylosaur

C20: from New Latin, from Greek ankulos crooked + -saur
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 ankylosaur

[ ăng′kə-lō-sôrəs ]
ankylosaur (ăngkə-lō-sôr′)

A large, herbivorous dinosaur of the genus Ankylosaurus of the Cretaceous Period. Ankylosaurs had a squat, heavily armored body and a clubbed tail.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.