ancient philosophical speculation that all things can be accounted for by innumerable combinations of hard, small, indivisible particles (called ... [8 related articles] Found on http://www.britannica.com/eb/a-z/a/120
That chemical compounds are formed by the union of atoms in certain definite proportions; in its modern form, first advanced in 1803 by John Dalton. ... (05 Mar 2000) ... Found on http://www.encyclo.co.uk/local/20973
Type: Term Definitions: 1. that chemical compounds are formed by the union of atoms in certain definite proportions; in its modern form, first advanced in 1803 by John Dalton. Found on http://www.medilexicon.com/medicaldictionary.php?t=91211