1. Chem. the statement that in a pure compound the elements are always combined in fixed proportions by weight.
2. Logic. the law that either a proposition or its denial must be true.
1. Chem. the statement that in a pure compound the elements are always combined in fixed proportions by weight.
2. Logic. the law that either a proposition or its denial must be true.
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012