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primordial ovum

noun
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Definition of primordial ovum

: one of the large cells in the germinal epithelium and in the sexual cords or egg tubes derived from it which occur in embryos of both sexes but more abundantly in the female and from which the true eggs are believed to be derived

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“Primordial ovum.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/primordial%20ovum. Accessed 19 January 2020.

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