oospore

American  

[oh-uh-spawr, -spohr] / ˈoʊ əˌspɔr, -ˌspoʊr /

noun

Biology.

1. a fertilized egg within an oogonium.

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oospore British  

/ ˈəʊəˌspɔː /

noun

1. a thick-walled sexual spore that develops from a fertilized oosphere in some algae and fungi

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oospore Scientific  

/ ō′ə-spôr′ /

1. A fertilized female cell or zygote, especially one with thick chitinous walls, developed from a fertilized oosphere.

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Other Word Forms

• oosporic adjective
• oosporous adjective

Etymology

Origin of oospore

First recorded in 1860–65; oo- + -spore

Example Sentences

L, M, N, Fertilization of the oogonium and development of the oospore in Peronospora.

From Project Gutenberg

The oospores give rise to neuter plants, the tetraspores to ♂ or ♀ plants.

From Project Gutenberg

The oospores of the Saprolegniæ, when arrived at maturity, possess a tolerably thick double integument, consisting of an epispore and an endospore.

From Project Gutenberg

After impregnation the fertilized oosphere immediately surrounds itself with a cell-wall and becomes the oospore which by a process of growth forms the embryo of the new plant.

From Project Gutenberg

After the production of this oospore the parent filament gradually loses its vitality and slowly decays.

From Project Gutenberg