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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  
/ 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

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.

See Examples For:

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

One young man made the connection between the refractometer and how the grapes tasted.

From Slate Jan. 25, 2013

The fractions are determined as follows: The fringes observed in the refractometer under the conditions above mentioned can readily be shown to be concentric circles.

From Scientific American Supplement, No. 633, February 18, 1888 by Various

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