plural in form but singular or plural in construction
1
: a science that deals with matter and energy and their interactions
2
a
: 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
To learn more about the mysterious physics of the soft, slimy towers, the study team brought samples of nematodes called Caenorhabditis elegans into a lab and analyzed them.
—
Kameryn Griesser, CNN Money, 5 June 2025
These days, most people delivering your forecasts are scientists with rigorous training in calculus, fluid dynamics, thermodynamics, atmospheric physics and the other meteorological coursework.
—Marshall Shepherd, Forbes.com, 5 June 2025
The basic physics of how thousands of tiny, slimy bodies manage to form something so coordinated and solid remains unresolved as well.
—Lauren Leffer, Popular Science, 5 June 2025
The only way in which bone size alone could contribute to fracture risk in someone is pure physics.
—Jia H. Jung, Mercury News, 4 June 2025
See All Example Sentences for physics
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Kameryn Griesser, CNN Money, 5 June 2025
These days, most people delivering your forecasts are scientists with rigorous training in calculus, fluid dynamics, thermodynamics, atmospheric physics and the other meteorological coursework.
—Marshall Shepherd, Forbes.com, 5 June 2025
The basic physics of how thousands of tiny, slimy bodies manage to form something so coordinated and solid remains unresolved as well.
—Lauren Leffer, Popular Science, 5 June 2025
The only way in which bone size alone could contribute to fracture risk in someone is pure physics.
—Jia H. Jung, Mercury News, 4 June 2025
See All Example Sentences for physics
Cite this Entry
“Physics.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/physics. Accessed 8 Jun. 2025.
Copy CitationKids Definition
physics
noun
phys·ics
ˈfiz-iks 
1
: a science that deals with matter and energy and their actions upon each other in the fields of mechanics, heat, light, electricity, sound, and the atomic nucleus
2
: physical composition, characteristics, or processes
the physics of sound
Medical Definition
physics
noun, plural in form but singular or plural in construction
phys·ics
ˈfiz-iks
: 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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