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Bitterroot Range
bitters
bittersweet
bitterweed
bitty
bitumen
bituminize
bituminous coal
bivalence
bivalent
bivalve
bivariate
bivi hole
bivouac
bivvy
biweekly
biyearly
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bivalence
bi·va·lence [ bī váylənss ]


noun 
Definition:
 
property of being true or false: in classical systems of logic, the property that a proposition has of being either true or false
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