The Collaborative International Dictionary
radiograph \ra"di*o*graph\ (r[=a]"d[i^]*[-o]*gr[a^]f), n.
An instrument for measuring and recording solar radiation.
An image or picture produced upon a sensitive surface, as of a photographic or fluorescent plate, by some form of penetrating radiation other than light, as X-rays, beta rays, etc.; esp., a picture of the internal structure of opaque objects traversed by the rays; a skiagraph. When the picture is produced upon photographic film by X-rays, the picture is usually called an X-ray photo or X-ray. When an image is produced on photographic film by a radioactive substance in close proximity to the film, in a manner so as to record the spatial distribution of the radioactive substance, the resulting image is called an autoradiograph or {autoradiogram}.
Wiktionary
n. An autoradiograph
Usage examples of "autoradiogram".
The gel at the right is an autoradiogram pattern after phosphorylation, derived from the one on the left.
The band of gel containing each protein can either be cut out with a razorblade and the radioactivity in it counted, or the whole gel can be placed against X-ray film and an autoradiogram made, just as with the 2-DG experiment.