goniometer

noun

go·​ni·​om·​e·​ter ˌgō-nē-ˈä-mə-tər How to pronounce goniometer (audio)
1
: an instrument for measuring angles
2
goniometric adjective
goniometry noun

Examples of goniometer in a Sentence

Recent Examples on the Web
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The setup gave surprisingly good image quality, for not only beauty pictures of chips but also for examining features with dimensions of a few micrometers, and even as a digital goniometer for measuring contact angles. IEEE Spectrum, 24 Apr. 2020

Word History

Etymology

Greek gōnia angle

First Known Use

1766, in the meaning defined at sense 1

Time Traveler
The first known use of goniometer was in 1766

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Cite this Entry

“Goniometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/goniometer. Accessed 3 Feb. 2026.

Medical Definition

goniometer

noun
go·​ni·​om·​e·​ter ˌgō-nē-ˈäm-ət-ər How to pronounce goniometer (audio)
: an instrument for measuring angles (as of a joint or the skull)
goniometric adjective
goniometry noun
plural goniometries
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