Share this entry
frustule Syllabification: frus·tule
Pronunciation: /ˈfrəsˌCHo͞ol/

Definition of frustule in English:


The silicified cell wall of a diatom, consisting of two valves or overlapping halves.
Example sentences
  • Observe the diatom frustule below at right, in which the two halves have been pushed slightly askew.
  • Bacteria accelerate silica dissolution in the sea by colonizing and enzymatically degrading the organic matrix of diatom frustules.
  • Like its brethren, it is encased by a frustule, a rigid cell wall delicately marked with pores in patterns distinctive enough for scientists to tell the species apart.


Mid 19th century: from Latin frustulum, diminutive of frustum (see frustum).

Definition of frustule in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove adverts and access premium resources