¹ Source: wiktionary.com
Definition of Photogens
1. photogen [n] - See also: photogen
Lexicographical Neighbors of Photogens
Literary usage of Photogens
Below you will find example usage of this term as found in modern and/or classical literature:
1. A Compend on Bacteriology: Including Animal Parasites by Robert Lucas Pitfield (1907)
"According to their chemical activities, bacteria are arbitrarily divided into
the following classes:— photogens Chromogens Zymogens ..."
2. Hygiene of Communicable Diseases: A Handbook for Sanitarians, Medical by Francis Merton Munson, John Harington, Francis Randolph Packard, Fielding Hudson Garrison (1920)
"Only living organisms emit light, but photogens can live without producing light.
Production of Aromatics. Indol, skatol, phenol, kresol, tyrosin, ..."
3. Pathogenic Microörganisms: A Practical Manual for Students, Physicians, and by William Hallock Park, Anna Wessels Williams, Charles Krumwiede (1917)
"Microorganisms which have the property of emitting light (photogens) are quite
widely distributed in nature, particularly in media rich in salt, ..."
4. The Principles of Bacteriology: A Practical Manual for Students and Physicians by Alexander Crever Abbott (1921)
"Another group—the "photogens" or photogenic species have the remarkable ability
to produce luminosity in the substances in or ..."
5. The Intellectual Observer (1864)
"As the natural and artificial photogens are purified in a similar way, we may
treat of the purification of both at the same time. The Artificial Products. ..."
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