Oospere :: Oospere (n.) An unfertilized, rounded mass of protoplasm, produced in an oogonium..
Oospere :: Oospere (n.) An analogous mass of protoplasm in the ovule of a flowering plant; an embryonic vesicle.
Oosperm :: Oosperm (n.) The ovum, after fusion with the spermatozoon in impregnation..
Zoosperm :: Zoosperm (n.) One of the spermatic particles; spermatozoid.