Synonyms for Gi (same or very similar meaning)
WordNet sense 1 (a unit of magnetomotive force equal to 0.7958 ampere-turns):
GB, GilbertWordNet sense 2 (of or relating to the stomach and intestines):
gastrointestinalWordNet sense 3 (clean in preparation for inspection):
G.I.From the ODE community, based on WordNetadd/edit