Meanings
proper noun
- historicalphysicalchemistryA gas law stating that when held at constant pressure and temperature, the volume of a gas is proportional to the amount of molecules in it (now subsumed by the ideal gas law).
Synonyms & antonyms
nounthe principle that equal volumes of all gases (given the same temperature and pressure) contain equal numbers of molecules
Similar
Avogadro's hypothesis
Broader
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
Proposed by Italian chemist Amedeo Avogadro.
Full word history & related roots →Cite this entry
APA
Avogadro's law. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Avogadro's%20law
MLA
“Avogadro's law.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Avogadro's%20law. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “Avogadro's law,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Avogadro's%20law.
Source: Avogadro's law on Wiktionary, CC BY-SA 4.0.