What is another word for doctrine of definite proportions?
Pronunciation: [dˈɒktɹɪn ɒv dˈɛfɪnət pɹəpˈɔːʃənz] (IPA) 
The doctrine of definite proportions refers to the concept that the ratio of elements in a pure compound is always the same, regardless of the amount of the compound. Synonyms for this notion include the law of definite proportions, the principle of constant composition, and Dalton's law of multiple proportions. These concepts are fundamental to the field of chemistry, as they provide a basis for understanding the composition of matter. Understanding the doctrine of definite proportions has applications in many areas of chemistry, including atomic structure, reactions, and properties of materials. While different names may be used to describe this principle, the underlying concept remains the same.
