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anniversary

Syllabification: (an·ni·ver·sa·ry)
Pronunciation: /ˌanəˈvərsərē/
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Definition of anniversary

noun (plural anniversaries)

  • the date on which an event took place in a previous year:the 50th anniversary of the start of World War II [as modifier]:anniversary celebrations
  • the date on which a country or other institution was founded in a previous year:Canada’s 125th anniversary
  • the date on which a couple was married in a previous year:he even forgot our tenth anniversary!
  • informal the date on which a romance began in a previous month or week.

Origin:

Middle English: from Latin anniversarius 'returning yearly', from annus 'year' + versus 'turning'

Spell anniversary with a double n at the beginning; the ending is -ary.

anniversary in other Oxford dictionaries

Definition of anniversary in the British & World English dictionary