[tel-ee-ost, tee-lee-]
belonging or pertaining to the Teleostei, a group of bony fishes including most living species.
Also called teleostome [tel-ee-uh-stohm, tee-lee-] . a teleost fish.
Also, teleostean.

1860–65; < Neo-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. 2014.
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World English Dictionary
teleost (ˈtɛlɪˌɒst, ˈtiːlɪ-)
1.  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
2.  of, relating to, or belonging to the Teleostei
[C19: from New Latin teleosteī (pl) creatures having complete skeletons, from Greek teleos complete + osteon bone]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
teleost   (těl'ē-ŏst', tē'lē-)  Pronunciation Key 
See bony fish.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica


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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