The Collaborative International Dictionary
Oosperm
Oosperm \O"["o]*sperm\ ([=o]"[-o]*sp[~e]rm), n. [Gr. w,'o`n an
egg + E. sperm.] (Biol.)
The ovum, after fusion with the spermatozo["o]n in
impregnation.
--Balfour.
Wiktionary
oosperm
n. (context biology English) The ovum, after fusion with the spermatozoon in impregnation.