'Spectrophotometer' definitions:

Definition of 'spectrophotometer'

From: WordNet
noun
A photometer for comparing two light radiations wavelength by wavelength

Definition of 'Spectrophotometer'

From: 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]