Medical Dictionary

Avogadro's law

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noun Avo·ga·dro's law \ˌav-ə-ˌgäd-(ˌ)rōz-, ˌäv-, -ˌgad-\

Medical Definition of Avogadro's law

  1. :  a law in chemistry: equal volumes of all gases at the same temperature and pressure contain equal numbers of molecules—called also Avogadro's hypothesis

Biographical Note for avogadro's law


\ˌav-ə-ˈgäd-(ˌ)rō, ˌäv-\play ,

Count Amedea

(1776–1856), Italian physicist and chemist. Avogadro is considered one of the founders of physical chemistry. In 1811, he made his outstanding scientific contribution: his hypothesis, now accepted as a scientific law, that equal volumes of gases at the same temperature and pressure contain the same number of molecules. This hypothesis was a landmark in 19th-century chemistry and is one of the basic concepts of modern chemistry.

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