#ovum__egg_cell__eggcell  the female reproductive cell; the female gamete
  supertype:  gamete  a mature sexual reproductive cell having a single set of unpaired chromosomes
  part of:  female_reproductive_system
  subtype:  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
     subtype:  nit  egg or young of an insect parasitic on mammals especially a sucking louse; often attached to a hair or item of clothing
     subtype:  spawn  the mass of eggs deposited by fish or amphibians or molluscs
        subtype:  roe.spawn  the egg mass or spawn of certain crustaceans such as the lobster
     subtype:  roe  the eggs or egg-laden ovary of a fish
     subtype:  silkworm_seed  eggs of a silkworm
     subtype:  roe.egg  eggs of female fish
  subtype:  ootid  mature ovum after penetration by sperm but before the formation of a zygote
  subtype:  ovule.ovum  a small or immature ovum

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