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: N
Compare gram-atom, gram molecule.
Also called
Avogadro constant.
Compare
Loschmidt's number.
Origin of Avogadro's number
First recorded in 1925–30; see origin at
Avogadro's law
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
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.