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aluminum

[uh-loo-muh-nuh m]
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noun
  1. Chemistry. a silver-white metallic element, light in weight, ductile, malleable, and not readily corroded or tarnished, occurring combined in nature in igneous rock, shale, clay, and most soil: used in alloys and for lightweight utensils, castings, airplane parts, etc. Abbreviation: alum.; Symbol: Al; atomic weight: 26.98; atomic number: 13; specific gravity: 2.70 at 20°C.
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adjective
  1. of, relating to, or containing aluminum: an aluminum frying pan.
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Also especially British, aluminium.

Origin of aluminum

1812; < New Latin, alteration, by Humphry Davy, of alumium, which was first proposed; aluminium formed after other metals in -ium. See alumina, -ium
Related formsal·u·min·ic [al-yuh-min-ik] /ˌæl yəˈmɪn ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words

bucketjarbottlepackagecanistervesselreceptaclecannikinaluminumtingunboatgutbucket

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Word Origin and History for aluminum

n.

1812, coined by English chemist Sir Humphry Davy (1778-1829), from alumina, name given 18c. to aluminum oxide, from Latin alumen "alum" (see alum). Davy originally called it alumium (1808), then amended this to aluminum, which remains the U.S. word, but British editors in 1812 further amended it to aluminium, the modern preferred British form, to better harmonize with other metallic element names (sodium, potassium, etc.).

Aluminium, for so we shall take the liberty of writing the word, in preference to aluminum, which has a less classical sound. ["Quarterly Review," 1812]
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Online Etymology Dictionary, © 2010 Douglas Harper

aluminum in Medicine

aluminum

(ə-lōōmə-nəm)
n. Symbol Al
  1. A silvery-white, ductile metallic element used in making dental alloys and forming compounds with pharmaceutical uses, especially as astringents and antiseptics. Atomic number 13.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

aluminum in Science

aluminum

[ə-lōōmə-nəm]
  1. Symbol Al A lightweight, silvery-white metallic element that is ductile, is found chiefly in bauxite, and is a good conductor of electricity. It is the most abundant metal in the Earth's crust and is used to make a wide variety of products from soda cans to airplane components. Atomic number 13; atomic weight 26.9815; melting point 660.3°C (1,220.5°F); boiling point 2,519°C; specific gravity 2.70; valence 3. See Periodic Table.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.