1 of 2


: of or relating to the branchiostegals
the branchiostegal membrane


2 of 2


variants or branchiostegal ray
plural -s
: one of the bony radiating processes of the hyoid arch that support the membranes enclosing the gill chamber in most fishes

Word History



International Scientific Vocabulary branchi- + steg- + -al

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!

Dictionary Entries Near branchiostegal

Cite this Entry

“Branchiostegal.” Dictionary, Merriam-Webster, Accessed 17 Jun. 2024.

Love words? Need even more definitions?

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