1. RGBI - Noun
2. RGBI - Proper noun
RGBI (uncountable)
Initialism of red, green, blue, intensity: a kind of cathode-ray-tube monitor interface
RGBI
Initialism of Rio Grande Bible Institute.
The CGA video card, with a suitable modulator, could use an NTSC television set or an RGBi monitor for display; IBM's RGBi monitor was their display model 5153. Source: Internet