| Developer 1. (n.) One who, or that which, develops. 2. (n.) A reagent by the action of which the latent image upon a photographic plate, after exposure in the camera, or otherwise, is developed and visible. Thesaurus Entries a, architect, contriver, designer, deviser, enterpriser, entrepreneur, fixer, fixing bath, framer, hypo, organizer, planner, processing solution, projector, promoter, short-stop, short-stop bath, sodium hyposulfite, sodium thiosulfate, soup, stop bath, strategian, strategist, tactician |