Avogadro's number

Avogadro's number

n.

The number of items in a mole, approximately 6.0221 × 10²³. Also called Avogadro constant.

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[After Amedeo Avogadro.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

A′voga′dro's num′ber

n.

the constant, 6.02 x 10²³, representing the number of atoms in a gram atom or the number of molecules in a gram molecule. Symbol: N Also called A′voga′dro con`stant.

[1925–30; after A. Avogadro]

Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

Avogadro's number

The number of atoms or molecules in a mole of a substance, approximately 6.0225 × 10²³. See more at mole³.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Thesaurus

Noun

1.

Avogadro's number - the number of molecules in a mole of a substance (approximately 602,250,000,000,000,000,000,000) Avogadro number constant - a number representing a quantity assumed to have a fixed value in a specified mathematical context; "the velocity of light is a constant"

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