Definition of skiagraphy in US English:

skiagraphy

(British sciagraphy)

noun

  • 1The use of shading and the projection of shadows to show perspective in architectural or technical drawing.

    • ‘His first process, sciagraphy or photogenic drawing, had been an invention.’
    • ‘These methods differed from contemporary pictorial practices by their greater science - particularly the use of shadow projection (skiagraphy).’
  • 2Medicine
    historical The use of X-rays as a diagnostic tool.

    ‘skiagraphy showed a foreign body, hardly as large as the little fingernail’

Origin

Late 16th century: from French sciagraphie, via Latin from Greek skiagraphia, from skia ‘shadow’.

Pronunciation

skiagraphy

/skīˈäɡrəfē//skaɪˈɑɡrəfi/