Zyg"o*sperm\, n. [Gr. ? a yoke + E. sperm.] (Bot.) A spore formed by the union of the contents of two similar cells, either of the same or of distinct individual plants. Zygosperms are found in certain orders of alg[ae] and fungi.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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