Definition of aluminum Aluminum

/ʌluˈmʌnʌm/ - [ulumunum] - a•lu•mi•num

We found 6 definitions of aluminum from 5 different sources.

Word comparison

British English

aluminium - /ˌæljʊmˈɪni‍əm/

American English

aluminum - /ʌluˈmʌnʌm/

What does aluminum mean?

WordNet

Noun Plural: aluminums
aluminum - a silvery ductile metallic element found primarily in bauxite
		aluminium, Al, atomic number 13
		metallic element, metal any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
		aluminium foil, aluminum foil, tin foil foil made of aluminum
		bauxite a clay-like mineral; the chief ore of aluminum; composed of aluminum oxides and aluminum hydroxides; used as an abrasive and catalyst
		duralumin an aluminum-based alloy
		potash alum, potassium alum, alum a double sulphate of aluminum and potassium that is used as an astringent (among other things)

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Wiktionary

aluminum (Noun)
A metallic chemical element symbol Al with an atomic number of 13.
aluminum (Noun)
Aircraft or other machinery made partially or wholly of aluminum.

Webster DictionaryWebster's Unabridged Dictionary 📘

aluminum (n.)
See Aluminium.

Electrical DictionaryThe Standard Electrical Dictionary 💡

aluminum
A metal; one of the elements; symbol: Al. Atomic weight: 27.4. Equivalent: 9.13. Valency: 3. Specific gravity: 2.6. It is a conductor of electricity. Relative resistance annealed, (Silver = 1)
1.935 Specific resistance at 0ºC (32°F.)
2.912 microhms
Resistance of a wire at 0ºC
(32°F.) a) 1 foot long, weighing 1 grain,
0.1074 ohms. b) 1 foot long, 1/1000 inch thick,
17.53
" c) 1 meter long, weighing 1 gram,
0.0749
" d) 1 meter long, 1 millimeter thick
0.03710
" Resistance of a 1-inch cube at 0ºC (32°F.) 1.147 microhms Electro-chemical equivalent.
.0958 (hydrogen == .0105)
Amalgam. (a) A combination or alloy in which one of the constituents is mercury. Usually the term is applied to an alloy of a single metal with mercury. Some metals readily form amalgams; such metals are: Gold, zinc, silver, lead and others; some, such as platinum and iron, form amalgams only under exceptional circumstances.
(b) The word is also applied to compositions for application to the cushions of frictional electric machine in which cases it is often a misnomer. True amalgams used for this purpose are made as follows:
(a) Tin, 1 part;
Zinc, 1 part;
Mercury, 2 parts (Kienmayer). (b) Tin, 2 parts; Zinc, 3 parts. (c) Tin, 3 parts; Zinc, 5 parts; Mercury, 4 parts. (d) Zinc, 1 part: Mercury, 4 parts; Mercury, 9 parts.
[sic]
The tin, if such is used, (formula a, b and c) is first melted, the zinc is added in successive portions. The mercury, which must be heated, is slowly poured into the melted alloy after removal of the latter from the fire, and the mixture, while making, is constantly stirred. It is kept stirred or rubbed in a mortar until cold. Sometimes it is poured into water and kept in constant agitation until cold. It is thus obtained in a granular condition, and is pounded in a mortar until reduced to powder. It must be dried and kept in tightly stopped bottles and is applied to the cushions after they have been greased. It is to be noticed that it is said that alloy (d) requires no pulverization beyond constant rubbing in a mortar as it cools. Sometimes the amalgam is shaken about in a wooden tray with chalk while cooling. The action of amalgams is not very clearly understood. Some claim that there is a chemical action, others that they simply act as conductors, others that they are more highly negative to the glass than the leather of the cushions.
Graphite or sulphide of tin (mosaic gold) are sometimes used to coat the cushions; it is these that are sometimes incorrectly called amalgams.

Part of speech

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aluminum, noun, singular of aluminums.

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