SKIAGRAPH

radiogram, radiograph, shadowgraph, skiagraph, skiagram

(noun) a photographic image produced on a radiosensitive surface by radiation other than visible light (especially by X-rays or gamma rays)

Source: WordNet® 3.1

Noun

skiagraph (plural skiagraphs)

(physics) Alternative form of sciagraph

Verb

skiagraph (third-person singular simple present skiagraphs, present participle skiagraphing, simple past and past participle skiagraphed)

Alternative form of sciagraph

Source: Wiktionary

Ski"a*graph, n. Ski*ag"ra*phy, n., etc.

Definition: See Sciagraph, Sciagraphy, etc.

Source: Webster’s Unabridged Dictionary 1913 Edition