Isospondyli

plural noun
Iso·​spon·​dy·​li

Definition of Isospondyli

: 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

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!

Other Words from Isospondyli

isospondylous \ ¦⸗⸗¦⸗dələs \ adjective

History and Etymology for Isospondyli

New Latin, from is- + -spondyli

Keep scrolling for more

Learn More about Isospondyli

Statistics for Isospondyli

Cite this Entry

“Isospondyli.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Isospondyli. Accessed 28 Sep. 2020.

Comments on Isospondyli

What made you want to look up Isospondyli? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Challenging Vocabulary Quiz Returns!

  • stylized drawing of woman pole vaulting across gap to get trophy
  • Which is a synonym of fuliginous?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!