Yes, "panchromatic" is probably the more accurate term for it. It's just a camera with no color filters and a known spectral response curve that's high enough across the frequencies being imaged.
Ah, yeah, I'd say that fits 'panchromatic camera' then. The panchromatic imager on my setup uses the exact same CCD and covers the exact same spectral range (350nm-1000nm), but it doesn't have the HSI lenses/filters. The company actually sells a smaller unit that is made from the same imager, but with the HS lens/filters.