the principle that gases react together in volumes (measured at the same temperature and pressure) that bear a simple ratio to each other and to the gaseous products
2. another name for Charles' law
Gay-Lussac's law in American English
(ˌgeɪləˈsæks)
1.
the statement that the volumes of two or more gases that combine to give a gaseous product are in the proportion of small whole numbers to each other and to the volume of the product