'Polarimeter' definitions:

Definition of 'polarimeter'

(from WordNet)
noun
An optical device used to measure the rotation of the plane of vibration of polarized light [syn: polarimeter, polariscope]

Definition of 'Polarimeter'

From: GCIDE
  • Polarimeter \Po`lar*im"e*ter\, n. [Polar + -meter.] (Opt.) An instrument for determining the amount of polarization of light, or the proportion of polarized light, in a partially polarized ray. [1913 Webster]