Macronucleus

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The larger of the two nuclei present in ciliate protozoans; it controls the nonreproductive functions of the cell.

    "These binucleated forms have one macronucleus functional and another sexual micronucleus which is not functional in the ordinary life processes of the species."

Synonyms

All synonyms
meganucleusmeganucleusnucleus

Example

More examples

"These binucleated forms have one macronucleus functional and another sexual micronucleus which is not functional in the ordinary life processes of the species."

Etymology

From macro- + nucleus.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.