quinquagenary

/K W IH1 N K W AH0 JH AH0 N EH1 R IY0/
noun
  1. 1

    A 50-year anniversary.

  2. 2

    (obsolete, rare) Synonym of pentecoster: an officer who commands 50 men.

adjective
  1. 1

    Of or related to 50-year anniversaries.

  2. 2

    Synonym of quinquagenarian: Of or related to fiftysomethings.