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.

Protons are hadrons, meaning they are made of partons, which include quarks and the gluons that hold them together.

From Science Daily • Jan. 5, 2026

Protons are built of three quarks that are bound together by the strong force.

From Science Daily • Jan. 23, 2024

Protons are the workhorses of cosmic creation and particle physics alike—yet, despite all this, we struggle to know simply how big they are.

From Scientific American • Mar. 16, 2023

Protons and neutrons stick together by exchanging particles called pions, and a quantum mechanical effect favors nuclei with similar numbers of protons and neutrons.

From Science Magazine • Oct. 26, 2022

Protons and neutrons are about 10~12 centimeters in diameter.

From "Innumeracy: Mathematical Illiteracy and Its Consequences" by John Allen Paulos