pack-year

See also: pack year

English

Alternative forms

Etymology

Compound of pack +‎ year.

Noun

pack-year (plural pack-years, abbreviation PY or py)

  1. (medicine, smoking) A unit of measure for estimating the number of cigarettes a person has previously smoked, equivalent to average number of packs (each containing 20 cigarettes) smoked per day multiplied by the number of years the person has smoked.

Translations

See also

This article is issued from Wiktionary. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.