ich·​thy·​op·​te·​ryg·​i·​um | \ -jēəm\
plural ichthyopterygia\ -​jēə \

Definition of ichthyopterygium

: the vertebrate limb when having the form of a fin whether as a definitive organ or in the course of individual or evolutionary development especially : any of the paired fins that are the typical limbs of fishes — compare chiropterygium

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!

History and Etymology for ichthyopterygium

New Latin, from ichthy- + Greek pterygion small wing, fin, diminutive of pteryg-, pteryx wing

Keep scrolling for more

Learn More about ichthyopterygium

Share ichthyopterygium

Statistics for ichthyopterygium

Look-up Popularity

Comments on ichthyopterygium

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


a servile follower or underling

Get Word of the Day daily email!

Test Your Vocabulary

What did you just call me?! A Quiz

  • rows-of-various-emoji
  • If a member of the audience describes your speech as bombastic, does that person mean it is:
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!


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


Love words? Need even more definitions?

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