| 单词 | pterosaur |
| 释义 | pterosaur[ ter-uh-sawr ] / ˈtɛr əˌsɔr / nounany flying reptile of the extinct order Pterosauria, from the Jurassic and Cretaceous periods, having the outside digit of the forelimb greatly elongated and supporting a wing membrane. Origin of pterosaur1860–65; <New Latin Pterosauria;see ptero-, -saur Words nearby pterosaurpteroma, pteron, pteropod, pteropodium, pteropterin, pterosaur, -pterous, pteroylglutamic acid, pteroyltriglutamic acid, pterygial, pterygium Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for pterosaur
British Dictionary definitions for pterosaurpterosaur / (ˈtɛrəˌsɔː) / nounany extinct flying reptile of the order Pterosauria, of Jurassic and Cretaceous times: included the pterodactylsCompare dinosaur, plesiosaur 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 pterosaurpterosaur [ tĕr′ə-sôr′ ] Any of various extinct flying reptiles of the Jurassic and Cretaceous Periods with wings consisting of a flap of skin supported by an elongated fourth digit on each forelimb (rather than an elongated second digit as in birds). Some pterosaurs were unique among reptiles in being covered with hair. Pterosaurs had wingspans ranging from less than 0.3 m (1 ft) to close to 15.2 m (50 ft). The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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