frustule

noun

frus·​tule ˈfrəs-(ˌ)chül How to pronounce frustule (audio)
-(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

Rhymes for frustule

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frustulation
frustule
frustulum
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Cite this Entry

“Frustule.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/frustule. Accessed 15 May. 2025.

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