Any of several internal combustion engines that have the cylinders arranged radially around a central crankshaft

(mathematics) The plane containing the circle formed by the intersection of two spheres (or whose points have equal power with respect to two non-intersecting spheres)

A combination radio and alarm clock.

(astronomy) That emits significant amounts of radio waves; radio-luminous

A combination radio and cassette recorder.

(astronomy) That emits significant amounts of radio waves; radio-bright.

A radio cassette player or radio cassette recorder

(astronomy) A brief emission of intense radio waves from a star etc.

A burglar alarm or fire alarm that transmits a warning radio signal when activated / A combination radio and alarm clock; a radio alarm clock

A combination radio and cassette player.