celebration

 
Pronunciation: /sɛlɪˈbreɪʃ(ə)n/

noun

[mass noun]
  • the action of celebrating an important day or event: the birth of his son was a cause for celebration
  • [count noun] a social gathering or enjoyable activity held to celebrate something: a birthday celebration

Origin:

early 16th century: from Latin celebratio(n-), from the verb celebrare (see celebrate)