"Unfertilized eggs" are eggs that have not been joined with sperm to create new life. They are unable to develop into babies or animals. Full definition
This native South African bee reproduces through a specific type of parthenogenesis known as thelytoky, in which diploid females (which carry the normal double set of chromosomes) develop from unfertilized eggs. (sciencemag.org)
Scientists have successfully cloned several species by taking nuclei from adult cells and transplanting them into unfertilized eggs whose nuclei have been removed. (sciencemag.org)
For instance, certain fish species produce no males, but the females must have sex to trigger parthenogenic development of unfertilized eggs; the female therefore «mates» with males of other species. (discovermagazine.com)