actinophore

noun

ac·​tin·​o·​phore

ak-ˈti-nə-ˌfȯr

plural -s

: a bony or cartilaginous element supporting the fin rays of fishes

Word History

Etymology

actin- + -phore

First Known Use

1877, in the meaning defined above

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!