macronucleus
Americannoun
noun
Other Word Forms
Derived 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
Inside are food vacuoles, a large macronucleus, and a small micronucleus.
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
In extreme cases — like that of Oxytricha trifallax — less than 5 percent of the DNA in the micronucleus is used by the macronucleus.
From New York Times • Feb. 10, 2010
The macronucleus is almost central; the contractile vacuole posterior.
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.
