macronucleus.
The larger of the two nuclei present in ciliate protozoans; it controls the nonreproductive functions of the cell.
Meaning & usage
The larger of the two nuclei present in ciliate protozoans; it controls the nonreproductive functions of the cell.
Where this word comes from
Etymology tree Proto-Indo-European *meh₂ḱ- Proto-Indo-European *-rós Proto-Indo-European *mh₂ḱrós Proto-Hellenic *makrós Ancient Greek μᾰκρός (măkrós)der. French macro-der. English macro- Proto-Italic *knuks Latin nux Latin nucleuslbor. English nucleus English macronucleus From macro- + nucleus.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.