[po.lar.im.e.ter] n [ISV, fr. polarization] (ca. 1859) 1: an instrument for determining the amount of polarization of light or the proportion of polarized light in a partially polarized ray
2: a polariscope for measuring the amount of rotation of the plane of polarization esp. by liquids -- po.lar.i.met.ric adj -- po.lar.im.e.try n