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Definitions of ovum
  1. noun
    the female reproductive cell; the female gamete

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Definition that contains ovum
  • egg animal reproductive body consisting of an ovum or embryo together with nutritive and protective envelopes; especially the thin-shelled reproductive body laid by e.g. female birds
  • harvey English physician and scientist who described the circulation of the blood; he later proposed that all animals originate from an ovum produced by the female of the species (1578-1657)
  • identical (of twins) derived from a single egg or ovum
  • conception the act of becoming pregnant; fertilization of an ovum by a spermatozoon
  • cleavage (embryology) the repeated division of a fertilised ovum
  • yolk nutritive material of an ovum stored for the nutrition of an embryo (especially the yellow mass of a bird or reptile egg)
  • ovulation the expulsion of an ovum from the ovary (usually midway in the menstrual cycle)
  • segmentation (embryology) the repeated division of a fertilised ovum
  • zygote (genetics) the diploid cell resulting from the union of a haploid spermatozoon and ovum (including the organism that develops from that cell)
  • pronucleus the nucleus of the ovum or sperm after fertilization but before they fuse to form the nucleus of the zygote
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