A material used to remove silver halide crystals from film between developing and fixing, or to remove other material from various surfaces

(grammar) A construction whereby an action verb is made into an agent noun.

(construction) An expanding agent used to produce a gas by chemical or thermal action, or both, in the manufacture of hollow or cellular materials.

plural of bleaching agent

Any urticant used in chemical warfare.

(medicine) Synonym of contrast medium

plural of special agent

plural of contract agent

(espionage) A secret agent recruited by another agent, and having no direct contact with the agency.

plural of law agent