mole

1. 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

2. golden mole any small African burrowing molelike mammal of the family Chrysochloridae, having copper-coloured fur: order Insectivora (insectivores)

3. Informal a spy who has infiltrated an organization and, often over a long period, become a trusted member of it

mole

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, etc.

mole

1. a breakwater

2. a harbour protected by a breakwater

3. a large tunnel excavator for use in soft rock

mole

⁴

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

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

What does it mean when you dream about a mole?

A blemish on the body suggests that something is marring or interfering with the dreamer’s personal esteem or that the dreamer is unable to obtain the desired esteem of others. A mole can also refer to a ground-dwelling rodent. It may represent thoughts arising from the dark depths of one’s subconscious mind, unearthing hidden agendas that need to be brought to light.

mole

[mōl]

(chemistry)

An amount of substance of a system which contains as many elementary units as there are atoms of carbon in 0.012 kilogram of the pure nuclide carbon-12; the elementary unit must be specified and may be an atom, molecule, ion, electron, photon, or even a specified group of such units. Symbolized mol.

(civil engineering)

A breakwater or berthing facility, extending from shore to deep water, with a core of stone or earth.

(mechanical engineering)

A mechanical tunnel excavator.

(medicine)

A mass formed in the uterus by the maldevelopment of all or part of the embryo or of the placenta and membranes.

A fleshy, pigmented nevus.

(vertebrate zoology)

Any of 19 species of insectivorous mammals composing the family Talpidae; the body is stout and cylindrical, with a short neck, small or vestigial eyes and ears, a long naked muzzle, and forelimbs adapted for digging.

mole

said to lack eyes. [Medieval Animal Symbolism: White, 95–96]

See: Blindness

mole

A unit of measurement of molecular weight. Part of the SI system of measurement, one mole (mol) is equal to 6.02257 X 10 to the 23rd molecules. See SI units.

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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Mole

a quantitative unit of matter characterizing the number of identical structural elements (atoms, molecules, ions, and other particles or their specific groups) in a physical system. A mole is equal to the amount of matter that contains the same number of particles as the number of atoms in an exactly 0.012-kg sample of a nuclide of ¹²C (Avogadro’s number, 6.022 X 10²³). The Russian symbol for mole is mol; the international symbol is mol.

By a decision of the Fourteenth General Conference on Weights and Measures in 1971, the mole was adopted as the seventh fundamental unit in the International System of Units. The multiple unit is the kilomole (1 kmol = 10³ moles).

The mole is used in the derivation of molar quantities such as the molar weight (kg/mol), molar volume (m³ /mol), molar internal energy (J/mol), molar heat capacity (J/[mol.°K]), and molar concentration (mol/m³).

Mole

a breakwater that protects the water area of a port from waves and that abuts the shore at one end; a mole may also serve at the same time as a place for hawsers and loading equipment.

In ports located on the open sea, two converging or parallel moles are constructed with gates between them (double, or paired, moles). If the port is situated in a bay whose shore partly protects the water area from wind and waves, the water area is usually bounded by one mole. The design and type of mole is mainly determined by the hydrologic and geologic conditions of the region in which the port is located. Moles may be of the sloping type (built of rubble made of stone or concrete blocks), the vertical type (walls erected with masonry, concrete, or rein-forced-concrete blocks), or a combination of both types. The top part of the mole (the part pushing out into the sea) is made 1-1.5 m higher than the rest and has a signal light or beacon mounted on it.