Home › Words › T › teleostteleostteleost means of, or relating to the Teleostei - fish with bony skeletons.Among words judged in Lexicurio's Arena, teleost ranks #16,730 of 42,747 for Qualifying.EtymologyFrom Ancient Greek τέλεος (téleos, “complete”) + ὀστέον (ostéon, “bone”).adjOf, or relating to the Teleostei - fish with bony skeletons.nounA fish of the taxonomic infraclass Teleostei.Definitions & examples from Wiktionary (CC BY-SA 3.0).