macronucleus
Americannoun
noun
Other Word Forms
Etymology
Origin of macronucleus
From New Latin, dating back to 1890–95; see origin at macro-, nucleus
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The micronucleus is essential for sexual reproduction, whereas the macronucleus directs asexual binary fission and all other biological functions.
From Textbooks ● Jan. 1, 2015
This pre-micronucleus undergoes three rounds of mitosis to produce eight copies, and the original macronucleus disintegrates.
From Textbooks ● Jan. 1, 2015
The clear spot to the right is the macronucleus, and the blobs are probably storage granules of some sort.
From Scientific American ● Oct. 17, 2013
Instead, the job of running the cell is done by something known as the macronucleus.
From New York Times ● Feb. 10, 2010
The macronucleus is in two parts, each band-form, one anterior, the other posterior in position.
From Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 by Calkins, Gary N. (Gary Nathan)
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
