(archaic) X-ray radiation

(historical) A signal made by burning lights of different colours, used by vessels at sea, and in the life-saving service.

plural of Coston light

The state or quality of being light-handed.

In a light-handed manner.

plural of black light

affected by, or sensitive to light. / (of substances and surfaces) changing chemically or physically when exposed to light.

plural of guiding light

plural of tea-light

Alternative spelling of tealight