From Longman Dictionary of Contemporary Englishovumo‧vum /ˈəʊvəm $ ˈoʊ-/ noun (plural ova /-və/) [countable] technical HBMBan egg, especially one that develops inside the mother’s body
Examples from the Corpus
ovum• Both will therefore produce an ovum that month.• The whole woman of reproductive age produces an ovum a month, representing a single shot at a pregnancy every twenty-eight days.• Then the nuclei arrange themselves side by side and fuse into a single nucleus carrying the chromosomes of both sperm and ovum.• The creature probably created by the fusion of a human nucleus and a bovine ovum was owed something.• It is thought that the head secretes a substance which is capable of breaking down the outer layer of the ovum.• The victor then provides the ovum for that month.• The ovum is roughly spherical or slightly egg-shaped.Origin ovum (1700-1800) Modern Latin Latin, “egg” 