Lexic.us

Definition of Alumina

1. Noun. Any of various forms of aluminum oxide occurring naturally as corundum.

Definition of Alumina

1. n. One of the earths, consisting of two parts of aluminium and three of oxygen, Al₂O₃.

Definition of Alumina

1. Noun. Aluminum oxide used especially in mining, material sciences and ceramics. ¹

¹ Source: wiktionary.com

Definition of Alumina

1. an oxide of aluminum [n -S]

Medical Definition of Alumina

1. One of the earths, consisting of two parts of aluminium and three of oxygen, Al2O3. It is the oxide of the metal aluminium, the base of aluminous salts, a constituent of a large part of the earthy siliceous minerals, as the feldspars, micas, scapolites, etc, and the characterising ingredient of common clay, in which it exists as an impure silicate with water, resulting from the decomposition of other aluminous minerals. In its natural state, it is the mineral corundum. Origin: L. Alumen, aluminis. See Alum. Source: Websters Dictionary (01 Mar 1998)

Lexicographical Neighbors of Alumina

Literary usage of Alumina

Below you will find example usage of this term as found in modern and/or classical literature:

1. Journal of the American Chemical Society by American Chemical Society (1908)
"Notes on the Separation of Silica and alumina in Iron Ores.—A reading of GW Dean's "Notes on the Determination of Silica and alumina in Iron Ores,"1 and ..."

2. Proceedings of the Royal Society of London by Royal Society (Great Britain) (1887)
"On the Crimson Line of Phosphorescent alumina." By WILLIAM CROOKES, FRS, VPCS Received December 30, 1886. In a paper which 1 had the honour of communicating ..."

3. Elements of Inorganic Chemistry: Including the Applications of the Science by Thomas Graham (1858)
"But alumina so prepared is insoluble in acids. It is obtained in the state of a hydrate from common alum by dissolving the latter in boiling water, ..."

4. The Mining Magazine (1857)
"For these purposes, in making a compound of sulphate of alumina and clay, ... When using shales containing alumina and magnesia, as in the case of the ..."

5. Elements of Chemistry: Including the Recent Discoveries and Doctrines of the by Edward Turner (1835)
".On this supposition 51.4 must be the equivalent of alumina, and 13.7 that of aluminium. ... of hydrate of alumina in a greater or less degree of purity. ..."

6. Manual of qualitative chemical analysis by C. Remigius Fresenius (1866)
"The SALTS OF alumina are mostly colorless, and non-volatile : some of them are ... The compounds of alumina which are insoluble in hydrochloric acid are ..."

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