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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.


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Word History and Origins

Origin of photogen1

First recorded in 1855–60; photo- + -gen

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photogelatin processphotogene