phys·​ics | \ ˈfi-ziks How to pronounce physics (audio) \

Definition of physics

1 : a science that deals with matter and energy and their interactions
2a : the physical processes and phenomena of a particular system
b : the physical properties and composition of something

Examples of physics in a Sentence

Recent Examples on the Web Other programs focused on physics, fusion energy, and advanced computing would get smaller boosts of less than 2.5%. Science News Staff, Science | AAAS, 28 May 2021 Dan Metzger, a senior at Nazareth Academy who took four AP tests in physics, statistics, English literature and calculus AB this May, said being able to come to class for in person review is helpful. Kimberly Fornek,, 25 May 2021 The first successes came from chemistry, which worked out how atoms connect together to make molecules, while later successes came from atomic physics, which worked out how electrons and atomic nuclei combined to make atoms. Don Lincoln, Forbes, 7 May 2021 Technical lectures on basic astronautics, physics, astronomy, propulsion, biophysics, gyroscopic theory and similar highly technical subjects delivered by specialists from the Langley Research Center. Joseph N. Bell, Popular Mechanics, 5 May 2021 Over the last three years, Bertoldi’s team has deconstructed the basic geometry, physics, and structural engineering obstacles to realize that concept. Max G. Levy, Wired, 27 Apr. 2021 The physics of space travel—the blistering speeds and the heavy g-loads and the huge, explosive machines necessary to make the trips—will perhaps never make rocket flights beyond the atmosphere as routine as airplane flights through it. Jeffrey Kluger, Time, 23 Apr. 2021 The science inside and out will include space physiology, life science, fluid physics, materials science, astronomy and Earth observation. Ling Xin, Scientific American, 21 Apr. 2021 The near-term applications are in experimental calculations or technical fields like physics or chemistry, where people are looking at these interactions very closely. Emily Bamforth, cleveland, 4 Apr. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'physics.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of physics

1715, in the meaning defined at sense 1

History and Etymology for physics

Latin physica, plural, natural science, from Greek physika, from neuter plural of physikos of nature, from physis growth, nature, from phyein to bring forth — more at be

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Time Traveler for physics

Time Traveler

The first known use of physics was in 1715

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Statistics for physics

Last Updated

4 Jun 2021

Cite this Entry

“Physics.” Dictionary, Merriam-Webster, Accessed 12 Jun. 2021.

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More Definitions for physics



English Language Learners Definition of physics

: a science that deals with matter and energy and the way they act on each other in heat, light, electricity, and sound


phys·​ics | \ ˈfi-ziks How to pronounce physics (audio) \

Kids Definition of physics

: a science that deals with the facts about matter and motion and includes the subjects of mechanics, heat, light, electricity, sound, and the atomic nucleus
phys·​ics | \ ˈfiz-iks How to pronounce physics (audio) \

Medical Definition of physics

: a science that deals with matter and energy and their interactions in the fields of mechanics, acoustics, optics, heat, electricity, magnetism, radiation, atomic structure, and nuclear phenomena


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