biennial /bī-enˈi-əl or -enˈyəl/

1. Lasting two years
2. Happening or appearing once in two years

1. A plant that flowers and fruits only in its second year, then dies
2. An event taking place or being celebrated every two years

• praiseworthiness
• praiseworthy
• praising
• praisingly
• praisings
• prajna
• prajnas
• Prakrit
• Prakritic
• praline
• pralines
• pralltriller
• pralltrillers
• pram
• pram-face
• pram-faces
• prams
• prana
• pranas
• pranayama
• pranayamas
• prance
• pranced
• prancer
• prancers