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
18 June 2025
(noun) large South American evergreen tree trifoliate leaves and drupes with nutlike seeds used as food and a source of cooking oil
Coffee starts as a yellow berry, changes into a red berry, and then is picked by hand to harvest. The red berry is de-shelled through a water soaking process and what’s left inside is the green coffee bean. This bean then dries in the sun for 3-5 days, where it is then packed and ready for sale.
