refractometer

[ree-frak-tom-i-ter]

noun Optics.

an instrument for determining the refractive index of a substance.

Origin of refractometer

First recorded in 1875–80; refract + -o- + -meter

Related formsre·frac·to·met·ric

[ri-frak-tuh-me-trik] /rɪˌfræk təˈmɛ trɪk/, adjectivere·frac·tom·e·try, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for refractometer

Historical Examples of refractometer

Lacking a refractometer, the widely differing specific gravities of the two minerals would easily serve to distinguish them.
A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public
Frank Bertram Wade

British Dictionary definitions for refractometer

refractometer

noun

any instrument for determining the refractive index of a substance

Derived Formsrefractometric (rɪˌfræktəˈmɛtrɪk), adjectiverefractometry, noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

refractometer in Medicine

refractometer

[rē′frăk-tŏm′ĭ-tər]

n.

Any of several instruments used to measure the refractive index of a substance.