Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of photometer is as below...

Spectrophotometer :: Spectrophotometer (n.) An instrument for measuring or comparing the intensites of the colors of the spectrum.

Photometer :: Photometer (n.) An instrument for measuring the intensity of light, or, more especially, for comparing the relative intensities of different lights, or their relative illuminating power..

Photo- :: Photo- () A combining form from Gr. fw^s, fwto`s, light; as, photography, phototype, photometer..

Lucimeter :: Lucimeter (n.) an instrument for measuring the intensity of light; a photometer.

Photometrical :: Photometrical (a.) Of or pertaining to photometry, or to a photometer..

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