X-ray

A ray of short-wavelength electromagnetic radiation usually produced by bombarding a metal target in a vacuum. Used to create images of the internal structure of objects; this is possible because X-rays pass through most objects and can expose photographic film.

A radiograph: an image made with X-rays.

An X-ray machine, a machine for performing radiography.

A tactical motif where a piece exerts influence or control over a square, piece, or line indirectly through another intervening piece.

To take a radiograph of; to obtain an image of using X-ray radiation, especially for the purpose of medical diagnostic evaluation.

Of a piece, to exert indirect influence, by either attacking, defending, or controlling an opponent's or friendly piece through an intervening piece along a rank, file, or diagonal.

Of or relating to X-rays.