exostome

noun

ex·​o·​stome
ˈeksəˌstōm
plural -s
1
botany : the opening of the outer integument of an ovule that has two integuments
2
: the outer part of the peristome of a moss

Word History

Etymology

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

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Dictionary Entries Near exostome

Cite this Entry

“Exostome.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exostome. Accessed 8 Dec. 2024.

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