Main entry: two-year, biennial
Definition: having a life cycle lasting two seasons
Usage: a biennial life cycle; parsnips and carrots are biennial plants often grown as annuals
Definition: completing its life cycle within a year
Antonyms: perennial
Definition: lasting three seasons or more
Main entry: biennial, biyearly
Definition: occurring every second year
Usage: they met at biennial conventions
Antonyms: nonperiodic, aperiodic
Definition: not recurring at regular intervals