noun, noun which may take the genitive case particle 'no'
half the amount; half quantity
Used in recipes, dosages, and general quantitative contexts to refer to exactly half of a specified amount.
このレシピは半量で作っても美味しい。
This recipe is still delicious even if you make it with half the amount.
薬の半量を飲ませてください。
Please give half the dose of the medicine.