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refractometer

American  
[ree-frak-tom-i-ter] / ˌri frækˈtɒm ɪ tər /

noun

Optics.
  1. an instrument for determining the refractive index of a substance.


refractometer British  
/ rɪˌfræktəˈmɛtrɪk, ˌriːfrækˈtɒmɪtə /

noun

  1. 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

Other Word Forms

Derived Forms

Etymology

Origin of refractometer

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A device called a refractometer, sold on Amazon for $20 to $30, can measure Brix levels from a drop of juice.

From New York Times • Apr. 17, 2018

He watched as Ms. Newton cut some honeycombs and spooned a dollop onto the small glass surface of a refractometer, a device used to gauge the moisture content in the honey.

From New York Times • Sep. 10, 2017

Mr. Reyes agreed when she handed the refractometer to him.

From New York Times • Sep. 10, 2017

Then I started showing them how to use the refractometer so that they could understand what we were doing.

From Slate • Jan. 25, 2013

The refractive index, which is thus a very important character in the scientific discrimination of gem-stones, may be conveniently determined, within certain limits, by means of the refractometer devised by Dr G.F.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" by Various

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