endostome

noun

en·​do·​stome

ˈendəˌstōm

plural -s

1

a

: the opening in the inner integument of an ovule having two integuments

b

: the inner part of the peristome of a moss

2

[New Latin endostoma] : endostoma

Word History

Etymology

International Scientific Vocabulary end- + -stome; probably originally formed in French

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!