(n.) Something used to produce light; as, gas and petroleum are illuminants\.

aglow beaming beamy benzine blushing bright and sunny burning candescent candle coal oil electric light bulb electricity fire flame flushing gas gasoline gleaming gleamy glim glinting glowing illuminating illuminating gas illuminative illuminator illumining incandescent incandescent body irradiative kerosene lamp lamping lantern light light as day light bulb light source luciferous lucific luciform luminant luminary luminative luminiferous luminificent luminous lustrous match moon oil orient paraffin petrol petroleum radiant rutilant rutilous shining shiny source of light starbright starlike starry stars streaming suffused sun sunny sunshiny taper torch