Nearby Words
noun
any fishlike marine reptile of the extinct order Ichthyosauria, ranging from 4 to 40 feet (1.2 to 12 meters) in length and having a round, tapering body, a large head, four paddlelike flippers, and a vertical caudal fin.
Related forms
ich·thy·o·sau·ri·an, adjective, noun
ich·thy·o·sau·roid, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Ichthyosaur
is always a great word to know.
So is ort. Does it mean:
| a scrap or morsel of food left at a meal. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
Collins
World English Dictionary
| ichthyosaur or ichthyosaurus (ˈɪkθɪəˌsɔː, ˌɪkθɪəˈsɔːrəs) | |
| —n , pl -saurs, -sauruses, -sauri | |
| See also plesiosaur any extinct marine Mesozoic reptile of the order Ichthyosauria, which had a porpoise-like body with dorsal and tail fins and paddle-like limbs | |
| ichthyosaurus or ichthyosaurus (ˈɪkθɪəˌsɔː, ˌɪkθɪəˈsɔːrəs, -ˈsɔːraɪ) | |
| —n | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
Ichthyosaur
1830, coined from Gk. ichthys "fish" + sauros "lizard."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
ichthyosaur  (ĭk'thē-ə-sôr') Pronunciation Key
Any of various extinct sea reptiles of the genus Ichthyosaurus and related genera, that had a medium-sized to large dolphin-like body with a dorsal fin, four flippers, and a large, crescent-shaped tail. The head had a long beak with sharp teeth, large eyes and earbones, and nostrils near the eyes on top of the skull. Ichthyosaurs were most common and diverse in the Triassic and Jurassic Periods and died out well before the end of the Cretaceous. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia
ichthyosaur
any member of an extinct group of aquatic reptiles, most of which were very similar to porpoises in appearance and habits. These distant relatives of lizards and snakes (lepidosaurs) were the most highly specialized aquatic reptiles, but ichthyosaurs were not dinosaurs.
Learn more about ichthyosaur with a free trial on Britannica.com.
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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