A substance added to a material to increase its bulk or volume.
मात्रा बढ़ाने वाला पदार्थ
English Usage: The bulking agent was essential in the formulation of the new drug.
Hindi Usage: नए दवा के निर्माण में मात्रा बढ़ाने वाला पदार्थ आवश्यक था।