frustule

[ fruhs-chool ]
/ ˈfrʌs tʃul /

noun Botany.

the siliceous cell wall of a diatom.

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Origin of frustule

1855–60; <French <Late Latin frustulum, diminutive of frustumfrustum
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for frustule

British Dictionary definitions for frustule

frustule
/ (ˈfrʌstjuːl) /

noun

botany the hard siliceous cell wall of a diatom

Word Origin for frustule

C19: from French, from Late Latin frustulum a small piece, from frustum a bit
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for frustule

frustule
[ frŭschōōl ]

The silica-rich cell wall of a diatom. Frustules are divided into two halves, and the intricate patterns of depressions and projections on each half help to identify individual diatom species.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.