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Avogadro's number

noun Chemistry.

the constant, 6.022 × 1023, representing the number of atoms, molecules, or ions in one mole of a substance. Symbol: NCompare gram-atom, gram molecule.

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Also called Avogadro constant.
Compare Loschmidt's number.

Origin of Avogadro's number

First recorded in 1925–30; see origin at Avogadro's law

Words nearby Avogadro's number

avocet, avodire, Avogadro, Avogadro's constant, Avogadro's law, Avogadro's number, avoid, avoidance, avoidance play, avoidant, avoidant personality
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for Avogadro's number

Avogadro's number

n.

The number of molecules in a mole of a substance, approximately 6.0225 X 1023.Avogadro's constant
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for Avogadro's number

Avogadro's number

The number of atoms or molecules in a mole of a substance, approximately 6.0225 X 1023. It is based on the number of carbon atoms in 12 grams of carbon 12.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.