Meaning of “bi” in the English Dictionary

"bi" in British English

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biadjective

/baɪ/ /baɪ/ /baɪ/ informal

abbreviation for bisexual :

When I was a teenager and came out to my parents, they said they already knew I was bi.
a bi partner

bi-prefix

uk /baɪ-/ us /baɪ-/

(Definition of “bi” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)