The process and techniques of sending telegrams using radio waves rather than wires.

Referring to the science of radiometry.

A message, like a telegram, transmitted by radio rather than wires.

An entertainment device that combined a radio and a record player or gramophone.

A radiograph

Waste containing radioactive nuclides.

A weapon, often a bomb, designed to achieve injury or contamination of a target by dispersing harmful radioisotopes.

(physics) The radioactive isotope of actinium, ²²⁷₈₉Ac, having a half-life of 21.7 years

Of, pertaining to, or caused by radioactivity.

(rare) Particularly suited to radio broadcasting