an instrument for determining the refractive index of a substance.
Origin of refractometer
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
any instrument for determining the refractive index of a substance
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
Any of several instruments used to measure the refractive index of a substance.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.