sciagraphy

 
Pronunciation: /sʌɪˈagrəfi/
(also skiagraphy)

noun

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

Derivatives

sciagram

Pronunciation: /ˈsʌɪəgram/
noun

sciagraph

Pronunciation: /ˈsʌɪəgrɑːf/
noun & verb

sciagraphic

Pronunciation: /sʌɪəˈgrafɪk/
adjective

Origin:

late 16th century: from French sciagraphie, via Latin from Greek skiagraphia, from skia 'shadow'