A thick-walled spore of some algae and fungi that is formed by union of two similar sexual cells, usually serves as a resting spore, and produces the sporophytic phase of the plant.

Zyg"o*spore (?), n. [Gr. a yoke + E. spore.] Bot. (a)

Same as Zygosperm.

(b)

A spore formed by the union of several zoospores; -- called also zygozoospore.

 

© Webster 1913.

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