Definition of teleosteous in English:
teleosteous
Pronunciation /tiːlɪˈɒstɪəs/ /tɛlɪˈɒstɪəs/
adjective
rare Zoology
Of or relating to the group Teleostei of ray-finned fishes.
Origin
Mid 19th century; earliest use found in Annals and Magazine of Natural History. From scientific Latin Teleostei + -ous.