Isospondyli

plural noun

Iso·​spon·​dy·​li

: 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

isospondylous

¦⸗⸗¦⸗dələs

adjective

Word History

Etymology

New Latin, from is- + -spondyli

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!