biennial

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bi·en·ni·al / bīˈenēəl/ • adj. 1. taking place every other year: summit meetings are normally biennial.2. (esp. of a plant) living or lasting for two years.• n. 1. a plant that takes two years to grow from seed to fruition and die. Compare with annual, perennial.2. an event celebrated or taking place every two years.DERIVATIVES: bi·en·ni·al·ly adv.

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