macronucleus

[ mak-roh-noo-klee-uhs, -nyoo- ]

/ ˌmæk roʊˈnu kli əs, -ˈnyu- /

noun Biology.

the larger of the two types of nuclei occurring in ciliate protozoans, having a multiple set of chromosomes and functioning in cell metabolism and protein synthesis.

Compare micronucleus.

Origin of macronucleus

From New Latin, dating back to 1890–95; see origin at macro-, nucleus

OTHER WORDS FROM macronucleus

mac·ro·nu·cle·ar, adjective

Words nearby macronucleus

macromutation, macromyeloblast, macron, macronormoblast, macronucleate, macronucleus, macronutrient, macronychia, macroorganism, macropenis, macrophage

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for macronucleus

The macronucleus was found to be double, as though just divided, in a large percentage of cases.
Marine Protozoa from Woods Hole|Gary N. Calkins
The macronucleus is spheroidal and placed near the center of the body; a conspicuous micronucleus lies near it.
Marine Protozoa from Woods Hole|Gary N. Calkins
The macronucleus is invariably long and band-formed, with attached micronucleus.
Marine Protozoa from Woods Hole|Gary N. Calkins
The macronucleus is centrally placed and globular to ovoid in form.
Marine Protozoa from Woods Hole|Gary N. Calkins

The macronucleus is usually double, rarely single or quadruple, but may occasionally break into numerous smaller pieces.
Marine Protozoa from Woods Hole|Gary N. Calkins

British Dictionary definitions for macronucleus

macronucleus

/ (ˌmækrəʊˈnjuːklɪəs) /

noun plural -clei (-klɪˌaɪ)

the larger of the two nuclei in ciliated protozoansCompare micronucleus

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for macronucleus

macronucleus

[ măk′rō-nōō′klē-əs ]

n.

The larger of two nuclei present in ciliate protozoans, which controls the nonreproductive functions of the cell.

Other words from macronucleus

mac′ro•nu′cle•ar adj.

单词	macronucleus
释义	macronucleus [ mak-roh-noo-klee-uhs, -nyoo- ] / ˌmæk roʊˈnu kli əs, -ˈnyu- / noun Biology. the larger of the two types of nuclei occurring in ciliate protozoans, having a multiple set of chromosomes and functioning in cell metabolism and protein synthesis. Compare micronucleus. Origin of macronucleus From New Latin, dating back to 1890–95; see origin at macro-, nucleus OTHER WORDS FROM macronucleus mac·ro·nu·cle·ar, adjective Words nearby macronucleus macromutation, macromyeloblast, macron, macronormoblast, macronucleate, macronucleus, macronutrient, macronychia, macroorganism, macropenis, macrophage Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for macronucleus The macronucleus was found to be double, as though just divided, in a large percentage of cases. Marine Protozoa from Woods Hole\|Gary N. Calkins The macronucleus is spheroidal and placed near the center of the body; a conspicuous micronucleus lies near it. Marine Protozoa from Woods Hole\|Gary N. Calkins The macronucleus is invariably long and band-formed, with attached micronucleus. Marine Protozoa from Woods Hole\|Gary N. Calkins The macronucleus is centrally placed and globular to ovoid in form. Marine Protozoa from Woods Hole\|Gary N. Calkins The macronucleus is usually double, rarely single or quadruple, but may occasionally break into numerous smaller pieces. Marine Protozoa from Woods Hole\|Gary N. Calkins British Dictionary definitions for macronucleus macronucleus / (ˌmækrəʊˈnjuːklɪəs) / noun plural -clei (-klɪˌaɪ) the larger of the two nuclei in ciliated protozoansCompare micronucleus Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for macronucleus macronucleus [ măk′rō-nōō′klē-əs ] n. The larger of two nuclei present in ciliate protozoans, which controls the nonreproductive functions of the cell. Other words from macronucleus mac′ro•nu′cle•ar adj. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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