(figuratively) A person (or thing) that brings happiness into the lives of others.

(botany) any of the bands of cells in various trees extending across the wood from the pith to the bark / (anatomy) the middle part of a cortical lobule in the kidney

An ultrasoft X-ray used in treating various skin diseases.

simple past tense and past participle of x-ray

present participle of x-ray

Alternative form of Blu-ray

(science fiction) A weapon that fires a beam of extremely high temperature.

Any of the rays of the genus Mobula, especially Mobula birostris, the manta ray.

A stream of beta particles (fast-moving electrons propagating through a gas or vacuum), such as emitted by a radioactive substance.

Synonym of glimmer of hope