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The Collaborative International Dictionary
Phototelegraphy

Phototelegraphy \Pho`to*te*leg"ra*phy\, n. Telegraphy by means of light, as by the heliograph or the photophone. Also, less properly, telephotography. -- Pho`to*tel"e*graph, n. -- Pho`to*tel`e*graph"ic, a.

Wiktionary
phototelegraphy

n. The fax system