os·​te·​ich·​thy·​an | \ ˌä-stē-ˈik-thē-ən How to pronounce osteichthyan (audio) \
variants: or less commonly osteichthian
plural osteichthyans also osteichthians

Definition of osteichthyan

: a fish of the class Osteichthyes : a bony fish Extant jawed vertebrates, or gnathostomes, fall into two major monophyletic groups, namely chondrichthyans (cartilaginous fishes) and osteichthyans (bony fishes and tetrapods).— Hector Botella et al., Nature, 2 Aug. 2007

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Other Words from osteichthyan

osteichthyan or less commonly osteichthian adjective
osteichthyan fishes

First Known Use of osteichthyan

1967, in the meaning defined above

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The first known use of osteichthyan was in 1967

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Cite this Entry

“Osteichthyan.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/osteichthyan. Accessed 30 Oct. 2020.

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