Last Updated：2025/12/04
(medicine, smoking) A unit for measuring the number of cigarettes a person has smoked previously; it is calculated by multiplying the average number of packs of cigarettes the person smokes per day by the number of years the person has smoked.
音声機能が動作しない場合はこちらをご確認ください
See correct answer
pack-year
Edit Histories（0）
Source Word
pack-year
（ plural ）
