Term used to describe 'Black & White' emulsions that are sensitive to all visible colours. Most modern films are panchromatic. (see Orthochromatic)
Found on https://www.encyclo.co.uk/local/20176
In photography, a term describing highly sensitive black-and-white film made to render all visible spectral colours in correct grey tones. Panchromatic film is always developed in total darkness Found on https://www.encyclo.co.uk/local/21221