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
Best Amazon Prime Day STEM Toy Deals Encourage early learning with age-appropriate STEM toys, like a marble run that helps kids learn about gravity and other basic physics principles.
—
Anja Webb, Parents, 7 Oct. 2025
In keeping with tradition, physics is the second Nobel to be awarded this week, after two American and one Japanese scientist won the medicine prize for breakthroughs in understanding the immune system.
—USA Today, 7 Oct. 2025
The 2025 Nobel Prize in physics has been awarded to a trio of scientists – a Briton, a Frenchman and an American – for their ground-breaking discoveries in the field of quantum mechanics.
—Katie Hunt, CNN Money, 7 Oct. 2025
The games have always been fast and loose with physics, and the omnimovement system only exasperated it by giving everyone the Matrix-style power to shoot backward while careening down a flight of stairs.
—Christopher Cruz, Rolling Stone, 7 Oct. 2025
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Anja Webb, Parents, 7 Oct. 2025
In keeping with tradition, physics is the second Nobel to be awarded this week, after two American and one Japanese scientist won the medicine prize for breakthroughs in understanding the immune system.
—USA Today, 7 Oct. 2025
The 2025 Nobel Prize in physics has been awarded to a trio of scientists – a Briton, a Frenchman and an American – for their ground-breaking discoveries in the field of quantum mechanics.
—Katie Hunt, CNN Money, 7 Oct. 2025
The games have always been fast and loose with physics, and the omnimovement system only exasperated it by giving everyone the Matrix-style power to shoot backward while careening down a flight of stairs.
—Christopher Cruz, Rolling Stone, 7 Oct. 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 10 Oct. 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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