OTHER WORDS FROM peristomeper·i·sto·mal, per·i·sto·mat·ic [per-uh-stuh-mat-ik], /ˌpɛr ə stəˈmæt ɪk/, per·i·sto·mi·al, adjective
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How to use peristome in a sentence
The “mouth” or peristome is normally black, the shell larger and stouter than hortensis, in which the mouth is white.Our British Snails|John William Horsley
The inner lip is that side of the peristome adjacent to the central pillar of the shell.The Sea Shore|William S. Furneaux
The capsules of the mosses form very beautiful microscopic objects, especially those furnished with a toothed peristome.
The capsule (fig. 5) is roundish-ovate, without a peristome, and the operculum is flattened.
In this moss the peristome is single (fig. 18), consisting of thirty-two spirally twisted teeth, arranged in pairs.