octingenary /ok-tin-jēˈnə-ri/ or octingentenary /-jen-tēˈnə-ri/

An eight-hundredth anniversary

• Pearl Harbouring
• Pearl Harbours
• pearlier
• Quadruple Alliance
• quadrupled
• quadruples
• quadruplet
• quadruple time
• quadruplets
• quadruplex
• quadruplexed
• quadruplexes
• quadruplexing
• quadruplicate
• quadruplicated
• quadruplicates
• quadruplicating
• quadruplication
• quadruplicities
• quadruplicity
• quadruplies
• quadrupling
• quadruply
• quadrupole
• quadrupoles