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Definitions

nucleus

[noo-klee-uhs, nyoo-] / ˈnu kli əs, ˈnyu- /


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.

All the matter around us -- including the protons and neutrons that make up the nucleus of atoms -- are made of baryons.

From Barron's • Mar. 17, 2026

During this process, an atomic nucleus absorbs neutrons in rapid succession.

From Science Daily • Mar. 13, 2026

This research marks the first detailed study of two-neutron emission from a nucleus that lies along the r-process pathway.

From Science Daily • Mar. 13, 2026

In that scenario the nucleus behaves like an "amnesiac nucleus," with no memory of how it was formed.

From Science Daily • Mar. 13, 2026

In the end, science was going to dictate the course of the NDRC’s program, and the science of the atomic nucleus was on Lawrence’s side.

From "Big Science" by Michael Hiltzik