radioluminescence

This term describes a specific physical phenomenon where ionizing radiation triggers the emission of light. It is primarily used in technical, scientific, and industrial contexts, such as in the design of specialized instrumentation or historical watch dials. Because it refers to a specific physical process, it carries a neutral, clinical tone.

As a mass noun representing a scientific property or process, it does not have a plural form. It is used to describe the general capability of a material to glow under radiation rather than individual instances of light emission.