- the weight in pounds of a ream of paper of a basic size, usually 25 × 38 inches (63 × 96 centimeters) for book stock, 17 × 22 inches (43 × 55 centimeters) for writing stock, and 20 × 26 inches (50 × 66 centimeters) for cover stock.
Basis Weight (noun) Definition, Meaning & Examples
