photometer

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noun pho·tom·e·ter \fō-ˈtä-mə-tər\

Definition of photometer

  1. :  an instrument for measuring luminous intensity, luminous flux, illumination, or brightness

Origin and Etymology of photometer

New Latin photometrum, from phot- + -metrum -meter


First Known Use: 1779


Medical Dictionary

1

photometer

play
noun pho·tom·e·ter \fō-ˈtäm-ət-ər\

Medical Definition of photometer

  1. :  an instrument for measuring the intensity of light, luminous flux, illumination or brightness by comparison of two unequal lights from different sources usually by reducing the illumination of one (as by varying the distance of the source or using a polarizing device) until the two lights appear equal with the amount of adjustment serving as the basis of comparison and the equality of illumination being judged by various means


2

photometer

transitive verb pho·tom·e·ter

Medical Definition of photometer

  1. :  to examine with a photometer


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