'Xanthidia' definitions:

Definition of 'Xanthidia'

From: GCIDE

Xanthidium \Xan*thid"i*um\, n.; pl. Xanthidia. [NL., fr. Gr. xanqo`s yellow.] (Bot.) A genus of minute unicellular algae of the desmids. These algae have a rounded shape and are armed with glochidiate or branched aculei. Several species occur in ditches, and others are found fossil in flint or hornstone. [1913 Webster]