Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A unit of illumination equal to one lumen per square centimeter.

from The Century Dictionary.

  • noun A proposed photometric unit equal to an illumination of one lux for one second; one lumen of light-flux applied to a surface of one square meter for one second of time.
  • noun Abbreviations of photographic
  • noun [lowercase or cap.] of photography.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A photometric unit of illuminance, or luminous flux through an area (symbol ph).
  • verb informal to photograph

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a unit of illumination equal to 1 lumen per square centimeter; 10,000 phots equal 1 lux

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Greek phōs, phōt-, light; see bhā- in Indo-European roots.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

Coined by André Blondel in 1921. See photo-.

from Wiktionary, Creative Commons Attribution/Share-Alike License

Shortening of photograph

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