Definitions of biennial:
- noun: a plant having a life cycle that normally takes two seasons from germination to death to complete; flowering biennials usually bloom and fruit in the second season
- adjective: occurring every second year
Example: "They met at biennial conventions"
- adjective: having a life cycle lasting two seasons
Example: "A biennial life cycle"
Search for biennial at other dictionaries: OneLook, Oxford, American Heritage, Merriam-Webster, Wikipedia