macronucleus


mac·ro·nu·cle·us

noun \ˌma-krō-ˈnü-klē-əs, -ˈnyü-\

Definition of MACRONUCLEUS

:  a relatively large densely staining nucleus of most ciliate protozoans that is derived from micronuclei and controls various nonreproductive functions
mac·ro·nu·cle·ar \ˌmak-rō-ˈnü-klē-ər, -ˈnyü-, ÷-kyə-lər\ adjective

Origin of MACRONUCLEUS

New Latin
First Known Use: 1892

mac·ro·nu·cle·us

noun \ˌmak-rō-ˈn(y)ü-klē-əs\   (Medical Dictionary)
plural mac·ro·nu·clei \-ˌī\ also mac·ro·nu·cle·us·es

Medical Definition of MACRONUCLEUS

: a relatively large densely staining nucleus of most ciliate protozoans that is derived from micronuclei and controls various nonreproductive functions—compare micronucleus
mac·ro·nu·cle·ar \ˌmak-rō-ˈn(y)ü-klē-ər\ adjective

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