plural noun

: a large order of teleost fishes that is the most primitive group of teleosts and that includes about 50 living families (as of the herrings and salmons) whose fishes have soft-rayed fins, an air bladder connected with the alimentary canal by a duct, abdominal pelvic fins, the anterior vertebrae unmodified and similar to the others, and usually a mesocoracoid or precoracoid arch

Word History


New Latin, from is- + -spondyli

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Dictionary Entries Near Isospondyli

Cite this Entry

“Isospondyli.” Dictionary, Merriam-Webster, Accessed 1 Feb. 2023.

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