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

biennˈially adverb

• tapas bar
• tapas bars
• tap bolt
• synaesthete
• synaesthetic
• synagogal
• synagogical
• synagogue
• synagogues
• synallagmatic
• synaloepha
• synaloephas
• synandria
• synandrium
• synandrous
• synangia
• synangium
• synantherous
• synantheses
• synanthesis
• synanthetic
• synanthic
• synanthies
• synanthous
• synanthy