n. A. little egg: specifically, in anat., physiol., and zoology, an ovulum or ovum, especially a small one, as that of a mammal, or one not yet matured and discharged from the ovary: specifically applied by Haeckel to the ovum or fertilizable but unfertilized egg-cell of the female, conformable with the use of spermule for the male sperm-cell. Its protoplasm is termed by him ovoplasm, and its nucleus ovococcus.n. In botany, a young or rudimentary seed; a peculiar outgrowth or production of the carpel which, upon fertilization and the formation of an embryo within, becomes the seed.n. Some small body like or likened to an ovule: as, an ovule of Naboth. See ovulum.