Dalton's atomic theory
- chem the theory that matter consists of indivisible particles called atoms and that atoms of a given element are all identical and can neither be created nor destroyed. Compounds are formed by combination of atoms in simple ratios to give compound atoms (molecules). The theory was the basis of modern chemistry
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Word Origin
C19: named after John Dalton
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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