oospore

noun Biology.

1. a fertilized egg within an oogonium.

noun

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

n.

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

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