A ray (fish) of the family Gymnuridae (or, in some systems, the subfamily Gymnurinae).

(physics) A path a photon or a group of photons takes through space, visible as a column of light. / (idiomatic) An inspiring or enlightening person or thing.

attributive form of gamma ray

Any of the group of rays of the order Torpedodiniformes, which can produce an electric discharge.

(computer graphics) The calculation of intersections between a ray and a surface.

(obsolete) X-ray

Alternative letter-case form of X-ray

Alternative spelling of X-ray

Alternative spelling of γ-ray

(geometry) A ray, or half-line.