D defs.my
Entry 2 senses Webster, 1913

Ovum

/(ō"vŭm)/ · O·vum · IPA /ˈoʊ̯.vəm/
01 n. A more or less spherical and transparent cell, which by a process of multiplication and growth develops into a mass of cells, constituting …
pl. Ova, Ovums ((ō"vȧ))
  1. 1.
    A more or less spherical and transparent cell, which by a process of multiplication and growth develops into a mass of cells, constituting a new individual like the parent; an egg, spore, germ, or germ cell. See Illust. of Mycropyle.(Biol.) See: Mycropyle
  2. 2.
    One of the series of egg-shaped ornaments into which the ovolo is often carved.(Arch.)