macronucleus

noun
mac·ro·nu·cle·us | \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

Other Words from macronucleus

macronuclear \ˌmak-rō-ˈnü-klē-ər, -ˈnyü-, nonstandard -kyə-lər \ adjective

First Known Use of macronucleus

1887, in the meaning defined above

History and Etymology for macronucleus

New Latin

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The first known use of macronucleus was in 1887

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macronucleus

noun
mac·ro·nu·cle·us | \ˌmak-rō-ˈn(y)ü-klē-əs \
plural macronuclei\-ˌī \ also macronucleuses

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

Other Words from macronucleus

macronuclear \ˌmak-rō-ˈn(y)ü-klē-ər \ adjective

More from Merriam-Webster on macronucleus

Britannica.com: Encyclopedia article about macronucleus

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