Main Entry: po·lar·im·e·ter

Pronunciation: \ˌpō-lə-ˈrim-ət-ər\

Function: noun

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 especially by liquids

—po·lari·met·ric \pō-ˌlar-ə-ˈme-trik\ adjective

—po·lar·im·e·try \ˌpō-lə-ˈrim-ə-trē\ noun, plural po·lar·im·e·tries