Peristome Definition

pĕrĭ-stōm
noun
The fringe of teeth around the opening of the spore case in mosses.
Webster's New World
The area or parts surrounding the mouth or a mouthlike part of various invertebrates.
Webster's New World

The lip, or edge of the aperture, of a spiral shell.

Wiktionary

Other Word Forms of Peristome

Noun

Singular:
peristome
Plural:
peristomes

Origin of Peristome

  • From peri- +"Ž Ancient Greek στόμα (stoma, “mouth")

    From Wiktionary

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