An optical instrument designed for viewing, examining, or projecting colored images or transparent colored preparations.
From Greek 'chroma' (color), 'dia' (through), and 'scope' (to view), naming an optical device for transmitting light through colored materials for viewing or projection.
A chromodiascope was an ancestor of the modern slide projector—it used colored glass or transparent films to create projected color images, which was revolutionary before color photography existed.
Complete word intelligence in one call. Free tier — 50 lookups/day.