American Heritage Dictionary
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Century Dictionary
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GNU Webster's 1913
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Elsewhere on the web
A single sperm penetrates the mother's egg cell, and the resulting cell is called a zygote.— CreationWiki - Recent changes [en]
Mature ova or sperm cells are haploid, indicating that their 23 chromosomes in their nuclei are unpaired (and after they combine, then the resulting single cell the zygote is again diploid).— CreationWiki - Recent changes [en]
Fertilization itself comprises a sequence of events that begins with the contact of a sperm cell with an egg cell and ends with the fusion of their two pronuclei to form a new diploid cell, called a zygote.— CreationWiki - Recent changes [en]
After fertilization, the resulting zygote is a single diploid cell in possession of DNA from both parents, and all the information required to build the adult organism.— CreationWiki - Recent changes [en]
That is, two haploid cells-usually an ovum from a female and a sperm cell from a male-merge into a single diploid cell called the zygote (or zygocyte).— Clipmarks | Live Clips

American Heritage Dictionary (1)
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