- plural of nucleus.
nuclei
Americannoun
noun
Etymology
Origin of nuclei
< Latin nucleī, nominative plural of nucleus; see 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.
One leading idea is that little red dots are supermassive black holes known as active galactic nuclei.
From Science Daily ● Aug. 17, 2026
However, they do not behave quite like the active galactic nuclei astronomers observe in the nearby universe.
From Science Daily ● Aug. 17, 2026
It helps explain the extraordinary stability of protons, which form a central part of atomic nuclei and do not appear to decay under ordinary circumstances.
From Science Daily ● Aug. 16, 2026
For decades, scientists have detected an unexplained rise in the number of low-energy gamma rays emitted by certain nuclei.
From Science Daily ● Jul. 31, 2026
For white dwarfs, the pressure of the electrons, stripped from their nuclei, holds the star up.
From "Cosmos" by Carl Sagan
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.
