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.
Fusion is the process of fusing hydrogen nuclei together, which releases immense amounts of energy.
From BBC • Apr. 20, 2026
In these reactions, atomic nuclei repeatedly absorb neutrons and then undergo radioactive decay until they reach stable forms.
From Science Daily • Apr. 14, 2026
Fusion does the opposite: It combines light atomic nuclei into heavier ones, releasing enormous energy.
From The Wall Street Journal • Mar. 28, 2026
Gold cannot form until certain unstable atomic nuclei break apart.
From Science Daily • Mar. 13, 2026
Within a few days, he proposed a solution: the protons were disintegration products not of the targets but of the deutons themselves, which were “exploding” upon contact with the atomic nuclei.
From "Big Science" by Michael Hiltzik
![]()
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.