IPA: /ˌɔːtəˈreɪdɪəʊɡræm/
KK: /ˌɔːtəˈreɪdɪəʊɡræm/
A type of image produced by the exposure of photographic film to radiation emitted from a sample, often used in scientific research to visualize the distribution of radioactive substances.
The scientist analyzed the autoradiogram to determine the location of the radioactive markers in the tissue sample.
Autoradiogram → It is formed from "auto-" (meaning self) and "radiogram" (from "radius" meaning ray and "gramma" meaning something written). The word refers to an image produced by the radiation emitted from a sample, thus a self-generated image from rays.
Think of 'self' ('auto-') creating an image from 'rays' ('radiogram') — that's how an autoradiogram works.