pack-year
English edit
Alternative forms edit
Noun edit
pack-year (plural pack-years)
- (medicine, smoking) A unit for estimating the number of cigarettes a person has smoked previously; it is calculated by multiplying the average number of packs (each containing 20 cigarettes) the person smokes per day by the number of years the person has smoked.
Synonyms edit
Translations edit
unit for measuring the number of cigarettes a person has smoked previously
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