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[tel-ee-ost, tee-lee-] /ˈtɛl iˌɒst, ˈti li-/
belonging or pertaining to the Teleostei, a group of bony fishes including most living species.
Also called teleostome
[tel-ee-uh-stohm, tee-lee-] /ˈtɛl i əˌstoʊm, ˈti li-/ (Show IPA)
. a teleost fish.
Also, teleostean.
1860-65; < New Latin Teleostei infraclass name (designating fish with completely ossified skeletons), plural of teleosteus, equivalent to Greek tele- tele-2 + -osteos -boned, adj. derivative of ostéon bone; see osteo-, -ous Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for teleost


/ˈtɛlɪˌɒst; ˈtiːlɪ-/
any bony fish of the subclass Teleostei, having rayed fins and a swim bladder: the group contains most of the bony fishes, including the herrings, carps, eels, cod, perches, etc
of, relating to, or belonging to the Teleostei
Word Origin
C19: from New Latin teleosteī (pl) creatures having complete skeletons, from Greek teleos complete + osteon bone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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teleost in Science
  (těl'ē-ŏst', tē'lē-)   
See bony fish.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for teleost

any member of the infraclass Teleostei, a large and extremely diverse group of ray-finned fishes. Along with the chondrosteans and the holosteans, they are one of the three major subdivisions of the class Actinopterygii, the most advanced of the bony fishes. The teleosts include virtually all of the world's important sport and commercial fishes, as well as a much larger number of lesser known species. The infraclass is distinguished primarily by the presence of a homocercal tail; i.e., one in which the upper and lower halves are about equal. The teleosts comprise some 20,000 species (about equal to all other vertebrate groups combined), with new species being discovered each year.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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