noun, plural per·i·go·ni·a [per-i-goh-nee-uh] /ˌpɛr ɪˈgoʊ ni ə/. Botany.
the envelope of modified leaves surrounding the antheridia in mosses.
Also per·i·gone [per-i-gohn] /ˈpɛr ɪˌgoʊn/.
Origin of perigonium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for perigonium
Historical Examples of perigonium
At the top of the axis in the male plant rise the antheridia, surrounded by an envelope of modified leaves called the perigonium.