Standard Lemma guide

peristome

noun · 5 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

One or two rings of tooth-like appendages surrounding the opening of the capsule of many mosses.

Definition source: English Wiktionary via Wiktextract

Topics: biology, botany, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The parts of or surrounding the mouths of numerous invertebrates.

Definition source: English Wiktionary via Wiktextract

Topics: biology, natural-sciences, zoology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

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

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

region around the mouth in various invertebrates

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: structure, anatomical structure, complex body part, bodily structure, body structure

5

noun

Meaning 5

(botany) fringe of toothlike appendages surrounding the mouth of a moss capsule

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: plant process, enation

History

Etymology

Etymology tree Proto-Indo-European *per-der. Ancient Greek περῐ́ (perĭ́)der. English peri- English -stome English peristome From peri- + -stome.