ovum

ovum

noun \ˈō-vəm\

plural ova \-və\

Definition of OVUM

: a female gamete : macrogamete; especially : a mature egg that has undergone reduction, is ready for fertilization, and takes the form of a relatively large inactive gamete providing a comparatively great amount of reserve material and contributing most of the cytoplasm of the zygote

Illustration of OVUM