photogen

photogen

[foh-tuh-juhn, -jen]
noun
1.
a light oil obtained by the distillation of bituminous shale, coal, or peat: once commercially produced chiefly as an illuminant and as a solvent.
2.
Biology. a photogenic organ, organism, or substance.

Origin:
1855–60; photo- + -gen

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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