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The Collaborative International Dictionary
Tithonographic

Tithonographic \Ti*thon`o*graph"ic\, a. [Tithonic + -graph + -ic.] Of, relating to, or produced by, the chemical action of rays of light; photographic.

Wiktionary
tithonographic

a. (context dated English) Of, relating to, or produced by the chemical action of rays of light; photographic.