ovum
/ˈəʊvəm/noun
(pl. ova /-və/)
- Biology a mature female reproductive cell, especially of a human or other animal, which can divide to give rise to an embryo usually only after fertilization by a male cell【生】（尤指人或其他动物的）卵; 卵细胞。
词源
early 18th cent.: from Latin， literally 'egg'.