Definition of macronucleus
: a relatively large densely staining nucleus of most ciliate protozoans that is derived from micronuclei and controls various nonreproductive functions
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Origin and Etymology of macronucleus
New Latin
First Known Use: 1887
Medical Dictionary
macronucleus
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noun
mac·ro·nu·cle·us
\ˌmak-rō-ˈn(y)ü-klē-əs\
Medical Definition of macronucleus
macronuclei
\-ˌī\play alsomacronucleuses
: a relatively large densely staining nucleus of most ciliate protozoans that is derived from micronuclei and controls various nonreproductive functions—compare micronucleus
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Britannica.com: Encyclopedia article about macronucleus
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