Oosperm

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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 spermatozoon in impregnation.
     --Balfour.
     [1913 Webster]