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noun
1.
any fish of the group Crossopterygii, extinct except for the coelacanth, regarded as being ancestral to amphibians and other land vertebrates.
adjective
2.
pertaining to or resembling a crossopterygian.
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Crossopterygian
has a plethora of syllables.
So is pneumonoultramicroscopicsilicovolcanoconiosis. Does it mean:
| (used as a nonsense word by children to express approval or to represent the longest word in English.) |
| an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language. |
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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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Link To crossopterygian
Collins
World English Dictionary
| crossopterygian (krɒˌsɒptəˈrɪdʒɪən) | |
| —n | |
| 1. | See also coelacanth any bony fish of the subclass Crossopterygii, having fleshy limblike pectoral fins. The group, now mostly extinct, contains the ancestors of the amphibians |
| —adj | |
| 2. | of, relating to, or belonging to the Crossopterygii |
| [C19: from New Latin Crossopterygiī, from Greek krossoi fringe, tassels + pterugion a little wing, from pterux wing] | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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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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American Heritage
Science Dictionary
crossopterygian  (krŏ-sŏp'tə-rĭj'ē-ən) Pronunciation Key
Any of a mostly extinct group of lobe-finned fishes of the order Crossopterygii, whose only living member is the coelacanth. One group of crossopterygians is thought to have evolved into terrestrial vertebrates beginning in the Devonian Period. See more at coelacanth. |
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
crossopterygian
any member of the subclass Crossopterygii, a group of primitive, lobe-finned, bony fishes believed to have given rise to the amphibians and all other land vertebrates. They appeared at the beginning of the Devonian Period (395,000,000 years ago) but are now represented only by the coelacanth (Latimeria chalumnae).
Learn more about crossopterygian with a free trial on Britannica.com.
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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