Avogadro's constantPronunciation: /ˌavəˈgɑːdrəʊz/ (also Avogadro's number)Definition of Avogadro's constant noun Chemistry the number of atoms or molecules in one mole of a substance, equal to 6.023 × 1023. Avogadro's constant in other Oxford dictionaries Definition of Avogadro's constant in the US English dictionary
