BIEN'NIAL, a. [L. biennis, of bis,twice, and annus, a year.] 1. Continuing for two years and then perishing; as plants, whose root and leaves are formed the first year, and which produce fruit the second.2. In botany, continuing for two years and then perishing; as plants, whose root and leaves are formed the first year, and which produce fruit the second.
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