Dictionary.com

plesiosaur

[ plee-see-uh-sawr ]
/ ˈpli si əˌsɔr /
Save This Word!

noun

any marine reptile of the extinct genus Plesiosaurus, from the Jurassic and Cretaceous periods, having a small head, a long neck, four paddlelike limbs, and a short tail.

QUIZZES

QUIZ YOURSELF ON THE 12 TYPES OF VERB TENSES!

Loosen up your grammar muscles because it’s time to test your knowledge on verb tenses!
Question 1 of 6
The verb tenses can be split into which 3 primary categories?

Meet Grammar Coach

Write or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing

Meet Grammar Coach

Improve Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of plesiosaur

<New Latin Plesiosaurus (1821), equivalent to Greek plēsí(os) near, close to + -o--o- + saûros-saur; originally so named because of its conjectured nearness to modern reptiles, relative to the ichthyosaurs

OTHER WORDS FROM plesiosaur

ple·si·o·sau·roid, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use plesiosaur in a sentence

  • The Plesiosaur, on the other hand, had a small and delicate head, with slender teeth and small eyes.

  • In the popular mind, perhaps, the Ichthyosaur and Plesiosaur are the typical representatives of that extinct race.

  • He might draw the line at a white plesiosaur riding up to meet his catamaran.

    Sjambak|John Holbrook Vance

British Dictionary definitions for plesiosaur

plesiosaur
/ (ˈpliːsɪəˌsɔː) /

noun

any of various extinct marine reptiles of the order Sauropterygia, esp any of the suborder Plesiosauria, of Jurassic and Cretaceous times, having a long neck, short tail, and paddle-like limbsSee also ichthyosaur Compare dinosaur, pterosaur

Word Origin for plesiosaur

C19: from New Latin plēsiosaurus, from Greek plēsios near + sauros a lizard
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 plesiosaur

plesiosaur
[ plēsē-ə-sôr ]

Any of various large, extinct marine reptiles of the genus Plesiosaurus and related genera of the Mesozoic Era. Most plesiosaurs had a small head on a long neck and a broad body with paddlelike limbs; one group had a large head on a short neck. The exact relationship between plesiosaurs and other reptiles is not known.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
FEEDBACK