mol

[ mohl ]
/ moʊl /

noun Chemistry.

Definition for mol (2 of 3)

mole4

or mol

[ mohl ]
/ moʊl /

noun Chemistry.

the basic unit in the International System of Units(SI), representing the amount of a substance expressed in grams containing as many atoms, molecules, or ions as the number of atoms in 12 grams of carbon-12 (which is Avogadro's number, or 6.022 × 1023).

Origin of mole

4
1900–05; < German Mol, short for Molekül molecule

Definition for mol (3 of 3)

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for mol

British Dictionary definitions for mol (1 of 8)

mol

the chemical symbol for

mole³

British Dictionary definitions for mol (2 of 8)

mol.

abbreviation for

molecular
molecule

British Dictionary definitions for mol (3 of 8)

mole1
/ (məʊl) /

noun

any small burrowing mammal, of the family Talpidae, of Europe, Asia, and North and Central America: order Insectivora (insectivores). They have velvety, typically dark fur and forearms specialized for digging
golden mole any small African burrowing molelike mammal of the family Chrysochloridae, having copper-coloured fur: order Insectivora (insectivores)
informal a spy who has infiltrated an organization and, often over a long period, become a trusted member of it

Word Origin for mole

C14: from Middle Dutch mol, of Germanic origin; compare Middle Low German mol

British Dictionary definitions for mol (4 of 8)

mole2
/ (məʊl) /

noun

a breakwater
a harbour protected by a breakwater
a large tunnel excavator for use in soft rock

Word Origin for mole

C16: from French môle, from Latin mōlēs mass

British Dictionary definitions for mol (5 of 8)

mole3
/ (məʊl) /

noun

pathol a nontechnical name for naevus

Word Origin for mole

Old English māl; related to Old High German meil spot

British Dictionary definitions for mol (6 of 8)

mole4
/ (məʊl) /

noun

the basic SI unit of amount of substance; the amount that contains as many elementary entities as there are atoms in 0.012 kilogram of carbon-12. The entity must be specified and may be an atom, a molecule, an ion, a radical, an electron, a photon, etcSymbol: mol

Word Origin for mole

C20: from German Mol, short for Molekül molecule

British Dictionary definitions for mol (7 of 8)

mole5
/ (məʊl) /

noun

pathol a fleshy growth in the uterus formed by the degeneration of fetal tissues

Word Origin for mole

C17: medical use of Latin mola millstone

British Dictionary definitions for mol (8 of 8)

mole6
/ (ˈməʊleɪ) /

noun

a spicy Mexican sauce made from chili and chocolate

Word Origin for mole

C20: from Mexican Spanish from Nahuatl molli sauce
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for mol

mol
[ mōl ]

n.

Variant ofmole3
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for mol (1 of 2)

mole1
[ mōl ]

A small, usually pigmented, benign growth on the skin.

Science definitions for mol (2 of 2)

mole2
[ mōl ]

The amount of an element, compound, or other substance that has the same number of basic particles as 12 grams of Carbon-12. The number of particles making up a mole is Avogadro's number. For elements and compounds, the mass of one mole, in grams, is roughly equal to the atomic or molecular weight of the substance. For example, carbon dioxide, CO2, has a molecular weight of 44; therefore, one mole of it weighs 44 grams.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.