An appropriate or proper quantity; the right amount (commonly used for cooking, medicine, etc.).
スープに塩を適量加えて味を整える。
Add an appropriate amount of salt to the soup to adjust the flavor.
薬は必ず医師の指示どおり、適量を守って服用してください。
Be sure to take the medicine in the proper dosage as directed by your doctor.
適量の運動は健康維持に役立つ。
A moderate amount of exercise helps maintain good health.