Definitions

1. adjective

Relating to or characteristic of antheridia, the male reproductive organs of ferns and other cryptogams.

“The antheridial filaments of the fern were delicate and easily damaged.”

2. noun

A male reproductive organ of a fern or other cryptogam, especially one that produces antherozoids.

“The antheridial structures on the fern’s leaves were visible to the naked eye.”