mole 1


the base SI unit of amount of matter. It is the amount of a substance that contains as many elementary entities (atoms, ions, molecules, or free radicals) as there are atoms in 0.012 kg of carbon 12 (12C), i.e., Avogadro's number, 6.023 × 1023, of elementary entities.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.