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.

Origin of Avogadro's number

First recorded in 1925–30; see origin at Avogadro's law
Also called Avogadro constant.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine 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.

Science 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.