Meaning of sciagraphy in English:

sciagraphy

(also skiagraphy)

Pronunciation /sʌɪˈaɡrəfi/

noun

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

    ‘These methods differed from contemporary pictorial practices by their greater science - particularly the use of shadow projection (skiagraphy).’
    • ‘His first process, sciagraphy or photogenic drawing, had been an invention.’
  • 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’.