expiration
noun
Plural: expirations
A misspelt form of: exspiration. There is no such thing as "piration", but there is the Latin spiro, respiro (breathe). Thus, we have inspiration (breathing in, inhaling), exspiration (breathing out, exhaling), and respiration (repeated inspirium and exspirium, breathing). (Source: J∙ Okram - The Mystery of the Rammed Key.)