pack-year
Medicine
noun
A unit used to express a person's cumulative exposure to cigarette smoking, equivalent to the consumption of 20 cigarettes per day for a period of a year.
Origin
1960s.
| 单词 | pack-year |
| 释义 | pack-yearMedicine noun A unit used to express a person's cumulative exposure to cigarette smoking, equivalent to the consumption of 20 cigarettes per day for a period of a year. Origin |
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