noun
EXAMPLES FROM CORPUS
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Both will therefore produce an ovum that month.
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It is thought that the head secretes a substance which is capable of breaking down the outer layer of the ovum .
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The ovum is roughly spherical or slightly egg-shaped.
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The creature probably created by the fusion of a human nucleus and a bovine ovum was owed something.
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The victor then provides the ovum for that month.
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The whole woman of reproductive age produces an ovum a month, representing a single shot at a pregnancy every twenty-eight days.
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Then the nuclei arrange themselves side by side and fuse into a single nucleus carrying the chromosomes of both sperm and ovum .