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[den-si-tom-i-ter] /ˌdɛn sɪˈtɒm ɪ tər/
Photography. an instrument for measuring the density of negatives.
a densimeter.
1900-05; densit(y) + -o- + -meter
Related forms
[den-si-tuh-me-trik] /ˌdɛn sɪ təˈmɛ trɪk/ (Show IPA),
densitometry, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for densitometer
  • The same reference standards are measured by densitometer.
British Dictionary definitions for densitometer


an instrument for measuring the optical density of a material by directing a beam of light onto the specimen and measuring its transmission or reflection
Derived Forms
densitometric (ˌdɛnsɪtəˈmɛtrɪk) adjective
densitometry, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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densitometer in Medicine

densitometer den·si·tom·e·ter (děn'sĭ-tŏm'ĭ-tər)

  1. An apparatus for measuring the optical density of a material, such as a photographic negative.

  2. See densimeter.

den'si·tom'e·try (-ĭ-trē)
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for densitometer

device that measures the density, or the degree of darkening, of a photographic film or plate by recording photometrically its transparency (fraction of incident light transmitted). In visual methods, two beams of equal intensity are used. One is directed through the plate, while the intensity of the other is adjusted by an optical wedge, by an iris diaphragm, or by moving the source, until the two beams have equal intensity, judged by the eye or by a photoelectric cell. With proper calibration, the density can be read directly. Other methods employ photoelectric cells to measure the intensity of the same beam with and without film or plate inserted in the path, the difference in intensity being a measure of density.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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