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• s  not having been fertilized
  an unfertilized egg

• The problem, however, as Eggan puts it, is that "there are never any extra unfertilized eggs hanging out at IVF clinics.
• The child she had carried for nine months was the genetic offspring of another woman, who had donated an unfertilized egg.
• Because the presence of RU 486 blocks the action of progesterone, the uterine lining sloughs off, and the embryo is expelled, as an unfertilized egg is during a normal period.

• unfertilised
• unimpregnated

News & Articles

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• DNA-Swap Technology Almost Ready for Fertility Clinic
  Mitochondrial transfer technology to shuffle genetic material between unfertilized eggs could help reduce the risk of childhood diseases -- Read more on ScientificAmerican.com
  March 6, 2014 - Scientific American

Quotes

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• Orrin Hatch in TheRealityCheck.Org
  In a 2001 letter to HHS Secretary Tommy Thompson, Hatch wrote, "To me, a frozen embryo is more akin to a frozen unfertilized egg or frozen sperm than to a fetus naturally developing in the body of a mother."