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mole

Pronunciation: mol

Definition:

  1. An intrauterine mass formed by the degeneration of the partly developed products of conception.
  2. In the SI, the unit of amount of substance, defined as that amount of a substance containing as many “elementary entities” as there are atoms in 0.0120 kg of carbon-12; “elementary entities” may be atoms, molecules, ions, or any describable entity or defined mixture of entities and must be specified when this term is used; in practical terms, the mole is 6.0221367 × 1023 “elementary entities.”

Synonym(s): nevus2

[A.S. mael (L. macula), a spot]

See Also: Avogadro number

Further information

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.

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