demi noun 4adjective 1forms 3 noun4 •A small glass used chiefly in France (especially for beer) holding 250 milliliters.The place was empty save for a big man who was sitting opposite drinking a demi of dark beer. — 1928 •A bottle of wine containing 0.375 liters of fluid, half the volume of a standard bottle; a split. •A member of the demimonde; a woman maintained by a wealthy man.It’s not every one who can distinguish between a demi and a duchess. — 1923 •(slang) A fifty pence piece. adjective1 •(informal) Demisexual. formsdemis · more demi · most demi
