frustule

noun

frus·tule ˈfrəs-(ˌ)chül

-(ˌ)t(y)ül

: the 2-valved siliceous shell of a diatom

Word History

Etymology

French, from Latin frustulum, diminutive of frustum

First Known Use

1848, in the meaning defined above

Time Traveler

The first known use of frustule was in 1848

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Browse Nearby Words

frustulation

frustule

frustulum

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Cite this Entry

Style

“Frustule.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/frustule. Accessed 23 May. 2025.

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