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nucleus

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


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.

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Each gold nucleus contains 79 protons and 118 neutrons.

From Science Daily ● Oct. 31, 2026

Unlike most proteins, which are produced using instructions stored in the DNA inside the cell's nucleus, mitochondrial microproteins originate from genetic instructions within mitochondria themselves.

From Science Daily ● Oct. 25, 2026

This property is crucial because it allows researchers to control the energy state of a nucleus with a laser, something that is not possible in the same way for most other atomic nuclei.

From Science Daily ● Oct. 11, 2026

On the rare occasions when a neutrino strikes an atomic nucleus, it produces fast-moving charged particles.

From BBC ● Oct. 6, 2026

If the number of neutrons creates an imbalance in the atom’s nucleus, that isotope is radioactive.

From "Meltdown" by Deirdre Langeland

This reduction is consistent with particles losing energy inside quark–gluon plasma and provides further evidence that the exotic material can form in collisions involving lighter nuclei.

From Science Daily ● Nov. 3, 2026

For decades, scientists believed that generating this plasma required collisions involving very heavy atomic nuclei, particularly lead.

From Science Daily ● Nov. 3, 2026

By reducing the collision energy and using smaller nuclei, physicists can approach the threshold at which the distinctive signatures of primordial matter disappear.

From Science Daily ● Oct. 31, 2026

Oxygen nuclei also have a relatively symmetrical, spherical shape, which makes the geometry of their collisions easier to analyze.

From Science Daily ● Oct. 31, 2026

Surrounding our Sun is a spherical swarm of giant snowballs composed of ice and rock and organic molecules: the cometary nuclei.

From "Cosmos" by Carl Sagan

Many words ending in us that formerly were written with only the Latin plural, are now given an English plural also; as, focuses, foci; cactuses, cacti; sarcophaguses, sarcophagi; convolvuluses, convolvuli ; funguses, fungi; nucleuses, nuclei.

From Slips of Speech : a Helpful Book for Everyone Who Aspires to Correct the Everyday Errors of Speaking by John Hendricks Bechtel

Hall, Price, and Kelsey headed in with straggling wagons to form the nucleuses of their columns; but the morning wore on and the Missourians, now under Woodhull, had not yet broken park.

From The Covered Wagon by Emerson Hough

"Gee whiz, nucleuses aren't so easy to be, that's one thing," Pee-wee muttered to himself as he bent his aimless way in the direction of Barrel Alley.

From Pee-Wee Harris Adrift by Percy Keese Fitzhugh

She saw him start a dozen nucleuses of fires; saw them advance till they halted at the edge of the burned ground, beyond the wagon, so that it stood safe in a vast black island.

From The Covered Wagon by Emerson Hough

"So far I have done nothing but nucleuses," said Olive, as they sat down.

From The Captain's Toll-Gate by Frank Richard Stockton


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