Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of pronuclei is as below...

Pronucleus :: Pronucleus (n.) One of the two bodies or nuclei (called male and female pronuclei) which unite to form the first segmentation nucleus of an impregnated ovum.

Pronuclei :: Pronuclei (pl. ) of Pronucleu.

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