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The Collaborative International Dictionary
Sciagraph

Sciagraph \Sci"a*graph\, n. [See Sciagraphy.]

  1. (Arch.) An old term for a vertical section of a building; -- called also sciagraphy. See Vertical section, under Section.

  2. (Phys.) A radiograph. [Written also skiagraph.]

Wiktionary
sciagraph

n. 1 (context architecture archaic English) A vertical section of a building; a sciagraphy. 2 (context physics English) A radiograph.