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The Collaborative International Dictionary

Ovism

Ovism \O"vism\, n. [Ovum + -ism.] (Zo["o]l.) The old theory that the egg contains the whole embryo of the future organism and the germs of all subsequent offsprings and is merely awakened to activity by the spermatozo["o]n; -- opposed to spermism or animalculism.

Wiktionary

ovism

n. The belief held by ovists.