oospore

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o·o·spore

(ō'ō-spōr),
A thick-walled fungus spore that develops from a female gamete either through fertilization or parthenogenesis in an oogonium.

oospore

(ō′ə-spôr′)
n.
A thick-walled zygote developed from a fertilized oosphere, especially in an oomycete.

o′o·spor′ic (-spôr′ĭk, -spŏr′-) adj.

oospore

(ō′ō-spor) [″ + sporos, seed]
A spore formed by the union of opposite sexual elements.

oospore

the thick-walled spore found, for example, in some fungi, and arising from the fertilization of the OOSPHERE derived from an OOGONIUM.