magnesium carbonate

magnesium carbonate   n.  A very light, odorless, white powdery compound, MgCO3, used in a wide variety of manufactured products including inks, glass, dentifrices, and cosmetics.

Main Entry: magnesium carbonate
Function: noun
: a carbonate of magnesium; especially : the very white crystalline normal salt MgCO₃ thatoccurs naturally, is prepared artificially by precipitation, and is used chiefly in paint and printing ink, as a filler, as an addition to table salt to prevent caking, and in medicine as an antacidand laxative