The property of being radiant; radiance / (physics) The amount of energy emitted, flux.

(physics) The radiation of alpha particles as a result of radioactive decay.

(astronomy) Any astronomical object that emits radio waves.

A kind of vehicle tire incorporating reinforcing cords distributed radially relative to the hub (at 90 degrees to the direction of travel).

Energy in a form that can radiate, generally electromagnetic energy.

plural of radial tyre

(Britain) Alternative spelling of radial tire

(rare) plural of radial symmetry

plural of radiant energy

A form of symmetry in which identical parts are arranged in a circular fashion around a central axis.