Hypertext Webster Gateway: "magnesia"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Magnesia \Mag*ne"si*a\ (?; 277), n. [L. Magnesia, fem. of
Magnesius of the country Magnesia, Gr. ? ? ? a magnet. Cf.
{Magnet}.] (Chem.)
A light earthy white substance, consisting of magnesium
oxide, and obtained by heating magnesium hydrate or
carbonate, or by burning magnesium. It has a slightly
alkaline reaction, and is used in medicine as a mild antacid
laxative. See {Magnesium}.
{Magnesia alba} [L.] (Med. Chem.), a bulky white amorphous
substance, consisting of a hydrous basic carbonate of
magnesium, and used as a mild cathartic.
From WordNet (r) 1.7 (wn)
magnesia
n : a white solid mineral that occurs naturally as periclase; a
source of magnesium [syn: {periclase}, {magnesium oxide}]
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