physics
Americannoun
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physics
plural
noun
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the branch of science concerned with the properties of matter and energy and the relationships between them. It is based on mathematics and traditionally includes mechanics, optics, electricity and magnetism, acoustics, and heat. Modern physics, based on quantum theory, includes atomic, nuclear, particle, and solid-state studies. It can also embrace applied fields such as geophysics and meteorology
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physical properties of behaviour
the physics of the electron
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archaic natural science or natural philosophy
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The scientific study of matter, energy, space, and time, and of the relations between them.
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The behavior of a given physical system, especially as understood by a physical theory.
Other Word Forms
Noun Inflected Forms
Etymology
Origin of physics
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Explanation
Physics is a kind of science, specifically the science of matter and energy and how they interact. Physics is the study of physical matter, energy, and how they work together. Kinetic energy and potential energy are part of physics. Although it may sound really advanced — and it is — physics is involved in everything we do. Champion pool players have a good understanding of how physics influences the movement of the balls. People who design roller coasters better know their physics. And if you've ever rigged up a pulley or a lever, then you've done basic physics.
Vocabulary lists containing physics
Albert Einstein
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A Brief History of Time
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"Roller Girl" by Victoria Jamieson
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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.
One famous Odesan who found himself at the centre of the language controversy is Pavlo Viktor, a physics teacher whose online lessons have been followed by millions around the world.
From BBC ● Sep. 5, 2026
Huang said that world models, which are designed to comprehend real-world physics, may still struggle to actually achieve that goal in three years.
From MarketWatch ● Sep. 5, 2026
Brust and Wray, both 34, met in physics class at St. Olaf College in their native Minnesota more than a decade ago.
From The Wall Street Journal ● Sep. 5, 2026
Joseph attended Harvard University on the GI bill and completed majors in math and physics in just three years.
From Los Angeles Times ● Sep. 4, 2026
His response was a lecture attacking Aristotle’s account of falling bodies, the weakest point in his physics.
From "The Invention of Science" by David Wootton
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.
