Definition of oosperm in English:

oosperm

(also oösperm)

noun

  • Chiefly Zoology. A fertilized ovum. Now rare.

Origin

Late 19th century; earliest use found in Thomas Huxley (1825–1895), biologist and science educationist. From oo- + -sperm.

Pronunciation

oosperm

/ˈəʊə(ʊ)spəːm/