Letter O

Oogenesis

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The process of egg formation.

The second 'o' in oogenesis is pronounced separately from the first: o·o·gen·e·sis.

The word was created from the prefix 'oo-' (Greek oon, egg) + 'genesis' (the coming into being of something) = the coming into being of the egg (the ovum).

Oogenesis is in contrast to spermatogenesis, the process of sperm formation.

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