alumina, aluminum oxide, aluminium oxide
(noun) any of various forms of aluminum oxide occurring naturally as corundum
Source: WordNet® 3.1
alumina (countable and uncountable, plural aluminas)
Aluminum oxide, especially when used in mining, material sciences or ceramics.
• alumian
Source: Wiktionary
A*lu"mi*na, n. Etym: [L. alumen, aluminis. See Alum.] (Chem.)
Definition: One of the earths, consisting of two parts of aluminium and three of oxygen, Al2O3.
Note: 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 characterizing 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.
Source: Webster’s Unabridged Dictionary 1913 Edition
23 January 2025
(adjective) being or located on or directed toward the side of the body to the west when facing north; “my left hand”; “left center field”; “the left bank of a river is bank on your left side when you are facing downstream”
The word “coffee” entered the English language in 1582 via the Dutch “koffie,” borrowed from the Ottoman Turkish “kahve,” borrowed in turn from the Arabic “qahwah.” The Arabic word qahwah was traditionally held to refer to a type of wine.
