English

edit
 
English Wikipedia has an article on:
Wikipedia

Alternative forms

edit

Noun

edit

pack-year (plural pack-years)

  1. (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
  • PY, py (initialisms)

Translations

edit