Pronunciation: (gu-nid'ē-um), [key]
—pl. -nid•i•aPronunciation: (-nid'ē-u). [key]
1. (in algae) any one-celled asexual reproductive body, as a tetraspore or zoospore.
2. an algal cell, or a filament of an alga, growing within the thallus of a lichen.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.