Dictionary

pronucleus

noun pro·nu·cle·us \(ˌ)prō-ˈnü-klē-əs, -ˈnyü-\

Definition of PRONUCLEUS

:  the haploid nucleus of a male or female gamete (as an egg or sperm) up to the time of fusion with that of another gamete in fertilization

Origin of PRONUCLEUS

New Latin
First Known Use: 1880

pronucleus

noun pro·nu·cle·us \(ˈ)prō-ˈn(y)ü-klē-əs\   (Medical Dictionary)
plural -clei \-klē-ˌī\ also pro·nu·cle·us·es

Medical Definition of PRONUCLEUS

:  the haploid nucleus of a male or female gamete (as an egg or sperm) up to the time of fusion with that of another gamete in fertilization—see female pronucleus, male pronucleus

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May 30, 2015
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