I just did a big Gala (honoring Steven Spielberg, with Ron Howard, Janet Maslin, and the premiere of a new piece performed by the Kronos Quarter commissioned for the event.) Video heavy as these things tend to be. I always use "electrics", "audio", and "video" (generally divided into playback and "Take IMAG") and, as usual, the result was no confusion among the operators and a pretty spiffy show.
I also op-ed video for tech of a show designed by Batwin & Robin several years back: they also call Qs to me as "Video" (also supplemented with ever pervasive "Take" for the switching), so if there is any industry standard, that is probably it.