rhinotheca

noun

rhi·​no·​theca

¦rīnə+

plural rhinothecae

: the sheath of the upper mandible of a bird

rhinothecal

"+

adjective

Word History

Etymology

New Latin, from rhin- + theca

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!