anniversary

 
Pronunciation: /anɪˈvəːs(ə)ri/

noun (plural anniversaries)

  • the date on which an event took place or an institution was founded in a previous year: the 50th anniversary of the Battle of Britain the 75th anniversary of the RAF
  • the date on which a couple were married in a previous year: he even forgot our tenth anniversary!

Origin:

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

Spelling help

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