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bi

Pronunciation: (bī), [key]
—adj., n.,
—pl. bis, bi's.
Slang.bisexual.

—pl. BI's.
built-in.

—Symbol, Chem.
bismuth.

a combining form meaning “twice,” “two,” used in the formation of compound words: bifacial; bifarious. Cf. bin-.

var. of bio-, esp. before a vowel: biopsy.

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