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English definition of “FYI”

FYI

(also fyi)     COMMUNICATIONS
abbreviation for for your information: used when you send someone a message, document, etc. that you think they should see, or mention something that you think they should know: She forwarded a copy of the email to several colleagues with the short message: "FYI."
(Definition of FYI from the Cambridge Business English Dictionary © Cambridge University Press)
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