noun
or ja·vel water (ˈ)zha|]vel, zhəˈ]
Usage: usually capitalized J
Etymology: Javel, former town now included in Paris, France; translation of French eau de Javel, eau de Javelle
: either of two aqueous solutions of hypochlorite used as a disinfectant or a bleaching agent and in photography:
a. : a solution of potassium hypochlorite now little used
b. : a solution of sodium hypochlorite