Macronucleus definition

măkrō-no͝oklē-əs, -nyo͝o-
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The larger of two nuclei present in ciliate protozoans, which controls nonreproductive functions of the cell, such as metabolism.
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The larger of two types of nuclei present in the cells of ciliated protozoans.
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The larger of two nuclei present in ciliate protozoans, which controls nonreproductive functions of the cell, such as metabolism.
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(biology) The larger of the two nuclei present in ciliate protozoans; it controls the nonreproductive functions of the cell.
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Other Word Forms

Noun

Singular:
macronucleus
Plural:
macronuclei