First Known Use: 1880
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
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Origin of PRONUCLEUS
New Latin
Medical Dictionary
pronucleus
noun pro·nu·cle·us \(ˈ)prō-ˈn(y)ü-klē-əs\
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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