What is the meaning of atomic theory?

noun

  • A theory of the structure of the atom.
  • Chemistry) any theory in which all matter is composed of tiny discrete finite indivisible indestructible particles. (
    • usage: "the ancient Greek philosophers Democritus and Epicurus held atomic theories of the universe"
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APAWordNet. (2010). atomic theory. Retrieved September 20, 2026, from http://smartdefine.org/atomic_theory/definitions/1215176
ChicagoWordNet. 2010. "atomic theory" http://smartdefine.org/atomic_theory/definitions/1215176 (accessed September 20, 2026).
HarvardWordNet 2010, atomic theory, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/atomic_theory/definitions/1215176>.
MLAWordNet. "atomic theory" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/atomic_theory/definitions/1215176>