Dictionary
ae•cid•i•um
Pronunciation: (ē-sid'ē-um), [key]—
n.,
—pl. ae•cid•i•aPronunciation: (ē-sid'ē-u). [key]
Mycol.
an aecium in which the spores are always formed in chains and enclosed in a cup-shaped peridium.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.