Gay-Lussac's law


: a statement in chemistry and physics: when two or more gaseous substances combine to form a gaseous compound the volume of the product is either equal to the sum of the volumes of the factors or is less than and bears a simple ratio to this sum

called also law of combining volumes

compare avogadro's law
: charles' law

Word History


after J. L. Gay-Lussac

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Dictionary Entries Near Gay-Lussac's law

Cite this Entry

“Gay-Lussac's law.” Dictionary, Merriam-Webster, Accessed 14 Jun. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!