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Definition of GI

GI: 1. In medicine, commonly used abbreviation for gastrointestinal, referring collectively to the stomach and the small and large intestine.
2. Outside of medicine, GI may stand for galvanized iron, general issue or government issue (as in GI Joe).

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=18594
Last Editorial Review: 10/9/2012

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