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pronucleus
/ ˌprəʊˈnjuːklɪəs /
noun
- the nucleus of a mature ovum or spermatozoan before fertilization
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Word History and Origins
Origin of pronucleus1
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Example Sentences
In Asterias glacialis the most favourable period for fecundation is about an hour after the formation of the female pronucleus.
From Project Gutenberg
In Echinus, on the other hand, where the polar bodies are formed in the ovary, the male pronucleus is always small.
From Project Gutenberg
When it finally unites with the female pronucleus it is equal in size to the latter.
From Project Gutenberg
The tail in the meantime vanishes, while the neck swells up and forms the male pronucleus.
From Project Gutenberg
Selenka, who has investigated the formation of the male pronucleus in Toxopneustes variegatus, differs in certain points from Fol.
From Project Gutenberg
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