Xan*thid"i*um\, n.; pl. Xanthidia. [NL., fr. Gr. xanqo`s yellow.] (Bot.) A genus of minute unicellular alg[ae] of the desmids. These alg[ae] 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.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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