Main Entry: po·lar·im·e·ter

Pronunciation: \ˌpō-lə-ˈri-mə-tər\

Function: noun

Etymology: International Scientific Vocabulary, from polarization

Date: 1855

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·lar·i·met·ric \pō-ˌla-rə-ˈme-trik\ adjective

— po·lar·im·e·try \ˌpō-lə-ˈri-mə-trē\ noun