Any solid solution of magnesium with aluminium, zinc, manganese, silicon, zirconium etc that has a low specific gravity and is used in aircraft manufacture, etc.

Alternative spelling of magnesium sulfate

A thin ribbon of magnesium metal used in laboratory demonstrations and in the magnesium lamp.

a magnesium lamp / the intense light from such a lamp

A lamp, containing a coil of magnesium ribbon fed into a burner by clockwork, that produced an intense light.

A thin magnesium ribbon. / Wire made from an alloy of magnesium and other metals.

(inorganic chemistry) The magnesium salt of carbonic acid, MgCO₃; it is a white powdery solid that occurs as magnesite and other minerals; it used as a mild base and in numerous industrial applications

Alternative spelling of magnesium sulfide

(inorganic chemistry) A white, crystalline powder (when pure), usually found in an impure, brown, non-crystalline form.

plural of magnesium sulfate