skiagram

noun

skia·​gram ˈskī-ə-ˌgram 

1

: a figure formed by shading in the outline of a shadow

2

: radiograph

Word History

Etymology

International Scientific Vocabulary, from Greek skia shadow + International Scientific Vocabulary -gram — more at scene

First Known Use

1801, in the meaning defined at sense 1

Medical Definition

skiagram

noun

skia·​gram ˈskī-ə-ˌgram 

: radiograph