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elasmosaur

British

/ ɪˈlæzməˌsɔː /

noun

a very long-necked extinct marine reptile: a type of 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

Etymology

Origin of elasmosaur

C19: from Greek elasmos metal plate + sauros lizard

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023