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bi-

bi-¹ definition

bi- (bī)

having two biangular, bicapsular
doubly, on both sides, in two ways or directions biconvex, bilingual
coming, happening, or issued every two (specified periods) biennial, biweekly
coming, happening, or issued twice during every (specified period): often replaced by semi- or half-, to avoid confusion with preceding sense bimonthly, biyearly
using two or both bilabial, bimanual
joining two, combining or involving two bilateral, bipartisan
Bot., Zool. twice, doubly, in pairs bifurcate, bipinnate
Chem.: usually replaced by di- (sense ) except in the names of acid salts [potassium bitartrate]
1. having twice as many atoms or chemical equivalents for a definite weight of the other constituent of the compound sodium bicarbonate
2. in organic compounds, having a combination of two radicals of the same composition biphenyl