vicennial /vī-senˈyəl/

1. Lasting, or coming at the end of, twenty years
2. Occurring every twenty years

• Aizoaceae
• Aizoon
• ajar
• Ajax
• ajee
• ajowan
• ajowans
• ajutage
• ajutages
• ajwan
• ajwans
• AK
• AK-47
• aka
• AKA
• akaryote
• akaryotes
• akathisia
• akathisias
• ake
• akedah
• akedahs
• akee
• akees
• Akela