the envelope of modified leaves surrounding the antheridia in mosses.
- Also per·i·gone [per-i-gohn]. /ˈpɛr ɪˌgoʊn/.
- per·i·go·ni·al, per·i·go·nal, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use perigonium in a sentence
At the top of the axis in the male plant rise the antheridia, surrounded by an envelope of modified leaves called the perigonium.