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1. Oxford Dictionary

   atomic theory

   • IPA[əˌtɒmɪk ˈθɪəri]

   英式

   • n.
     the theory that all matter is made up of tiny indivisible particles (atoms). According to modern interpretations of the theory, the atoms of each element are effectively identical, but differ from those of other elements, and unite to form compounds in fixed proportions.；a theory in any field which proposes the existence of distinct, separable, independent components

   • noun: atomic theory, plural noun: atomic theories

2. • 釋義

   n.

   名詞

   • 1. the theory that all matter is made up of tiny indivisible particles (atoms). According to modern interpretations of the theory, the atoms of each element are effectively identical, but differ from those of other elements, and unite to form compounds in fixed proportions.
   • ▪ a theory in any field which proposes the existence of distinct, separable, independent components an atomic theory of heredity