1. A soft, white or gray mineral consisting of calcium sulfate dihydrate, used in making plaster, drywall, and fertilizer.

Examples

• Drywall is made from gypsum sandwiched between layers of paper.
• The artist mixed gypsum powder with water to create plaster for sculpting.
• Gypsum deposits are mined in many parts of the world for industrial use.
• Farmers sometimes add gypsum to soil to improve its structure and drainage.
• The white cliffs contained large amounts of gypsum and other minerals.
• Gypsum is softer than limestone and easier to carve.