frustule

F4R1U1S1T1U1L1E1

noun

The siliceous shell of a diatom.

Similar
testule
OriginLatin frustulum →
Scrabble 11
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Meanings

nounfrustule (plural frustules)

plural frustules

  1. biologyThe siliceous shell of a diatom.

    Synonyms: testule

Synonyms & antonyms

nounThe siliceous shell of a diatom.

Similar
testule
Also see
testule

Origin

  1. Latinfrustulum
  2. Englishfrustule

Borrowed from Latin frustulum, from frustum (“morsel”).

More words from Latin

Full word history & related roots →

Rhymes & wordplay

Anagrams

sulfuret
Cite this entry
APA

frustule. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/frustule

MLA

“frustule.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/frustule. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “frustule,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/frustule.

Source: frustule on Wiktionary, CC BY-SA 4.0.