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Noun: atomism  'a-tu,mi-zum
  1. (psychology) a theory that reduces all mental phenomena to simple elements (sensations and feelings) that form complex ideas by association
  2. (chemistry) any theory in which all matter is composed of tiny discrete finite indivisible indestructible particles
    - atomic theory, atomist theory, atomistic theory

Derived forms: atomisms

Type of: scientific theory, theory

Antonym: holism

Encyclopedia: Atomism