- the siliceous cell wall of a diatom.
Origin of frustule
Examples from the Web for frustule
Historical Examples of frustule
Frustule, frus′tūl, n. the siliceous two-valved shell of a diatom, with its contents.
Frustule lanceolate, truncate; zone with numerous divisions.
Frustule membranaceous, elliptical, truncate, with broad ends.
Median lines not on the same side of each valve of the frustule.
In one frustule I noticed one valve with one stigma and the other with four stigmas.
- botany the hard siliceous cell wall of a diatom
Word Origin for frustule
- 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.