Word.ws English Dictionary

pack-years

pack-years is the plural of pack-year.

Meaning of pack-year

Noun

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

  1. 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.

Questions about pack-years

What is pack-years the plural of?
Pack-years is the plural of pack-year.

Words near pack-years in the dictionary

  1. pack-up
  2. pack-up kit
  3. pack-up kits
  4. pack-ups
  5. pack-year
  6. pack-years
  7. packa
  8. packability
  9. packable
  10. packables
  11. package

Source and license

Adapted from Wiktionary: pack-years (page history and authors); pack-year (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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