Meanings
nounpack-year (plural pack-years, abbreviation PY or py)
plural pack-years · abbreviation PY · abbreviation py · alternative pack year
- lifestyleA 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.
Origin
Translations
French paquet-année
- paquet-annéeunit for measurement
German Packungsjahr
- Packungsjahrunit for measurement
Hungarian csomagév, dobozév
- csomagévunit for measurement
- dobozévunit for measurement
Portuguese ano-maço
- ano-maçounit for measurement
Romanian pachet-an
- pachet-anunit for measurement
Cite this entry
APA
pack-year. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/pack-year
MLA
“pack-year.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/pack-year. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “pack-year,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/pack-year.
Source: pack-year on Wiktionary, CC BY-SA 4.0.