- Greek letter - Letter from Greece: Good morning, ma! - Radiation type - Radiation, ... rays - Third Greek letter - Type of ray - The third letter (/, / = Eng. G) of the Greek alphabet.
- Emission - the particles and gamma rays emitted in nuclear decay - TV screen emission - The act of radiating, or the state of being radiated;
emission and diffusion of rays of light; beamy brightness. - The shooting forth of anything from a point or surface,
like the diverging rays of light; as, the radiation of heat.