Oxide+of+aluminum
51strontium — strontic /stron tik/, adj. /stron shee euhm, sheuhm, tee euhm/, n. Chem. a bivalent, metallic element whose compounds resemble those of calcium, found in nature only in the combined state, as in strontianite: used in fireworks, flares, and tracer …
52earth — 1. Soil; the soft material of the land, as opposed to rock and sand. 2. An easily pulverized mineral. 3. An insoluble oxide of aluminum or of certain other elements characterized by a high melting point. [A.S. eorthe] alkaline earths alkaline e.… …
53Microdermabrasion — (often referred to as Microderm) is a family of cosmetic procedures popular in day spas, doctors practices, and medical spas in which the stratum corneum (dead outermost surface of the skin) is partially or completely removed by light abrasion,… …
54alumina — noun Etymology: New Latin, from Latin alumin , alumen alum Date: 1801 the oxide of aluminum Al2O3 occurring native as corundum and in hydrated forms (as in bauxite) …
55Early IBM disk storage — The invention of magnetic disk storage, pioneered by IBM in the 1950s, was a critical component of the computer revolution. This article surveys the major IBM computer disk drives introduced in the 1950s, 1960s and early 1970s. The basic… …
56Super-thermites — are powders containing an oxidizer and a reducing agent that when heated to a critical temperature undergo a very powerful exothermic reaction. What separates them from traditional thermite is the fact that the oxidizer and a reducing agent,… …
57rose madder — a pigment derived from anthraquinone and hydrated oxide of aluminum, characterized chiefly by its reddish color and permanence: used in painting. Cf. madder lake (def. 2). [1885 90] * * * …
58alumina — n. Oxide of aluminum, argillaceous earth, argil …
59alumina — a•lu•mi•na [[t]əˈlu mə nə[/t]] n. chem. the natural or synthetic oxide of aluminum, Al2O3, occurring in nature in a pure crystal form as corundum • Etymology: 1780–90; < L alūmin , s. of alūmen alum I+ a III …
60diaspore — di•a•spore [[t]ˈdaɪ əˌspɔr, ˌspoʊr[/t]] n. mir a hydrous oxide of aluminum, AlO(OH), occurring as a mineral in white to greenish crystals or in foliated masses • Etymology: < F (1801); see Diaspora …
