refractometer

noun

: an instrument for measuring refractive indices (as for identification or the determination of sugar content)

Examples of refractometer in a Sentence

Recent Examples on the Web
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Alcohol content of the distillate should be in the region of 50% ABV., which can be checked with a refractometer. Megan Murphy, Robb Report, 21 Apr. 2021 Puro slides another portion of the soil into a portable refractometer to measure the carbon content using a newer method calledQuick Carbonthat's being tested as a rapid means for measuring carbon in the field. Todd Nelson, Star Tribune, 22 Feb. 2021

Word History

Etymology

International Scientific Vocabulary

First Known Use

1842, in the meaning defined above

Time Traveler
The first known use of refractometer was in 1842

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Cite this Entry

“Refractometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/refractometer. Accessed 18 Sep. 2025.

Medical Definition

refractometer

noun
: an instrument for measuring indices of refraction

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