a combining form meaning “moss, liverwort,” used in the formation of compound words: bryology.

Origin of bryo-

combining form representing Greek brýon moss Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Word Origin and History for bryo-

word-forming element meaning "moss" in scientific compounds, from Greek bryos, bryon "moss."

Online Etymology Dictionary, © 2010 Douglas Harper