English Dictionary

pack-year

名詞

(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.

日本語の意味

医療用語で、平均1日に吸うタバコのパック数と喫煙年数を掛け合わせて算出される喫煙量を示す単位。

The patient's lung cancer risk was partly attributed to his 40 pack-year smoking history.

患者の肺がんリスクは、過去に40パックイヤーに相当する喫煙歴の一部に起因していた。

意味（1）

(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.

pack-years （ plural ）