Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
See magnesium oxide.
[Short for New Latin magnēsia alba, literally, white magnesia : Medieval Latin magnēsia, mineral ingredient in the philosopher's stone (from Greek magnēsiā, a kind of ore, talc or a talclike substance, after Magnēsiē, a region of Thessaly where it was found, from Magnēs, an inhabitant of Thessalian Magnesia) + Latin alba, feminine of albus, white.]
(Elements & Compounds) another name for magnesium oxide
[C14: via Medieval Latin from Greek Magnēsia, of Magnēs ancient mineral-rich region]
magˈnesian, magnesic, magˈnesial adj
mag•ne•sia(mægˈni ʒə, -ʃə)
a white tasteless substance, magnesium oxide, MgO, used in medicine as an antacid and laxative. Compare milk of magnesia.
[< New Latin]
A white powder, MgO, used in heat-resistant materials because of its very high melting point. It is also used in medicine as an antacid or laxative.
Switch to new thesaurus
|Noun||1.||magnesia - a white solid mineral that occurs naturally as periclase; a source of magnesium|
atomic number 12, magnesium, Mg - a light silver-white ductile bivalent metallic element; in pure form it burns with brilliant white flame; occurs naturally only in combination (as in magnesite and dolomite and carnallite and spinel and olivine)
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition