noun
Technical term used in printing and paper industries. Refers to the weight of paper per unit area, typically expressed in grams per square meter (g/m²).
この用紙の坪量は70g/m²です。
The grammage of this paper is 70 g/m².
坪量が高いほど紙は厚くなります。
The higher the paper weight, the thicker the paper.