(1) The film-forming ingredient in paint, usually either a drying oil or a polymeric substance. (2) In the food industry, a material used in sausage manufacture that absorbs moisture at high temperatures, e.g., various flours, dried milk, and soy protein. (3) Any cementitious material that is soft at high temperatures and hard at room temperature, used to hold dry powders or aggregate together, e.g., asphalt and sulfur in paving compositions, and resins used in sand casting.See Paint.