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.

Origin of Avogadro's number

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