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kinetic theory of matter

noun, Physics.
1.
a theory that matter is composed of small particles, all in random motion.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for kinetic theory of matter
  • Physical changes in the state of matter that result from thermal changes can be explained by the kinetic theory of matter.
Contemporary definitions for kinetic theory of matter
noun phrase

a theory that matter consists of small particles in rapid random motion

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