Avogadro's number

noun

Avo·​ga·​dro's number ˌa-və-ˈgä-(ˌ)drōz- How to pronounce Avogadro's number (audio)
ˌä-və-,
-ˈga- How to pronounce Avogadro's number (audio)
: the number 6.022 × 1023 indicating the number of atoms or molecules in a mole of any substance

called also Avogadro number

Word History

Etymology

Count Amedeo Avogadro

First Known Use

1904, in the meaning defined above

Time Traveler
The first known use of Avogadro's number was in 1904

Dictionary Entries Near Avogadro's number

Cite this Entry

“Avogadro's number.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Avogadro%27s%20number. Accessed 4 Oct. 2023.

Medical Definition

Avogadro's number

noun
variants or Avogadro number
: the number 6.023 × 1023 indicating the number of atoms or molecules in a mole of any substance compare avogadro's law
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