1. U.S. units of liquid measurements equal to two U.S. pints or 0.946 liters each and also British units of liquid measurements equal to two British pints or 1.14 liters each: “The hotel serves its guests two quarts of liquor free of cost on the eve of new year.”
Quartz is a mineral (silicon dioxide) that occurs in colorless, transparent, or tinted hexagonal crystals: “The mineral quartz like silicon-another naturally occurring element- has contributed a lot to science and technology.”