Spectrophotometer

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Spectrophotometer \Spec`tro*pho*tom"e*ter\, n. [Spectrum +
     photometer.]
     1. (Opt.) An instrument for measuring or comparing the
        intensities of the colors of the spectrum.
        [1913 Webster]
  


     2. (Chem., Physics) An analytical instrument for measuring
        the degree of absorption of light at different wavelengths
        by a chemical substance. A specific pattern of absorption
        intensities at a series of wavelengths is a characteristic
        of each different chemical substance.
        [PJC]

From WordNet (r) 2.0 [wn]:

  spectrophotometer
       n : a photometer for comparing two light radiations wavelength
           by wavelength