# perigonium

> English word · Noun

## Definitions
1. The sterile parts of a flower; collectively, the sepals and petals (or tepals); the perianth.
2. The modified leaves around the antheridia in a bryophytic plant.
3. The wall of the sporosac in a hydroid.

## Etymology
From peri- + -gonium.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/perigonium