Definitions

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

  • n. A device used for measuring the sensitivity of photographic film to light.
  • n. A similar device for measuring the sensitivity of eyes to light.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An instrument used to measure the sensitivity of photographic film to light

from the GNU version of the Collaborative International Dictionary of English

  • n. An instrument or apparatus for comparing and grading the sensitiveness of plates, films, etc., as a screen divided into squares of different shades or colors, from which a picture is made on the plate to be tested.

from The Century Dictionary and Cyclopedia

  • n. An apparatus or device of any kind for testing or determining the degree of sensitiveness of photographic films, emulsions, etc.; also, loosely, the sensitiveness of a plate (generally expressed in numbers) as indicated by a sensitometer.

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

  • n. a measuring instrument for measuring the light sensitivity of film over a range of exposures

Etymologies

sensit(ivity) + -meter.
(American Heritage® Dictionary of the English Language, Fourth Edition)

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