[uh-loo-muh-nuh
m] 
| 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. |
| 2. | of, pertaining to, or containing aluminum: an aluminum frying pan. |
[al-yuh-min-ik] , adjective | a·lu·mi·num (ə-lōō'mə-nəm) n. Symbol Al A silvery-white, ductile metallic element, the most abundant in the earth's crust but found only in combination, chiefly in bauxite. Having good conductive and thermal properties, it is used to form many hard, light, corrosion-resistant alloys. Atomic number 13; atomic weight 26.98; melting point 660.2°C; boiling point 2,467°C; specific gravity 2.69; valence 3. See Table at element. [alumin(a) + -(i)um.] |
"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]
aluminum a·lu·mi·num (ə-l&oomacr;'mə-nəm)
n.
Symbol Al
A silvery-white, ductile metallic element, found chiefly in bauxite. A good conductor, it is used in light, corrosion-resistant alloys. Atomic number 13; atomic weight 26.98; melting point 660.3°C; boiling point 2,519°C; specific gravity 2.70; valence 3.