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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

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

From Science Daily • Mar. 13, 2026

Along this pathway across the nuclide chart, a common sequence involves beta decay of the parent nucleus followed by the release of two neutrons.

From Science Daily • Mar. 13, 2026

Scientists still need to determine the precise role these enzymes play in the nucleus.

From Science Daily • Mar. 9, 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