Mole

Pronunciation

Definition 1

A benign (not cancer) growth on the skin that is formed by a cluster of melanocytes (cells that make a substance called melanin, which gives color to skin and eyes). A mole is usually dark and may be raised from the skin. Also called nevus. (NCI Dictionary)

Definition 2

A unit of amount of substance, one of the seven base units of the International System of Units (Systeme International d'Unites, SI). It is the amount of substance that contains as many elementary units as there are atoms in 0.012 kg of carbon-12. When the mole is used, the elementary entities must be specified and may be atoms, molecules, ions, electrons, other particles, or specified groups of such particles. (NCI Thesaurus)

Definition 3

A unit defined as the amount of substance that contains as many elementary units as there are atoms in 0.012 kg of carbon-12. When the mole is used, the elementary entities must be specified and may be atoms, molecules, ions, electrons, other particles, or specified groups of such particles. (NCI Thesaurus/CDISC)

Definition 4

In chemistry, M is the amount of a substance that has 6.023 x 10(23) atoms or molecules of that substance. (NCI Dictionary)

Definition 5

A small, mammal of the family Talpidae that lives underground and feeds on small invertebrates. The mole has tiny covered eyes that are believed to be able to distinguish night from day, and not much else. (NCI Thesaurus)