Definition of basipterygium
: a basal bone or cartilage forming a support of one of the paired fins of a fish: a : a large cartilage supporting the radialia in ganoids and selachians b : a large bone supporting the rays of a pelvic fin in teleosts c : the posterior member of a group of three such supporting elements in certain fishes — compare mesopterygium, metapterygium, propterygium
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.
Join MWU now and get access to America’s largest dictionary, with:
- 300,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of basipterygium
New Latin, from basi- + Greek pterygion fin, literally, small wing — more at pterygium
Seen and Heard
What made you want to look up basipterygium? Please tell us where you read or heard it (including the quote, if possible).