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goniometer

[goh-nee-om-i-ter]
noun
  1. an instrument for measuring solid angles, as of crystals.
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Origin of goniometer

First recorded in 1760–70; gonio- + -meter
Related formsgo·ni·o·met·ric [goh-nee-uh-me-trik] /ˌgoʊ ni əˈmɛ trɪk/, go·ni·o·met·ri·cal, adjectivego·ni·o·met·ri·cal·ly, adverbgo·ni·om·e·try, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for goniometry

goniometer

noun
  1. an instrument for measuring the angles between the faces of a crystal
  2. an instrument consisting of a transformer circuit connected to two directional aerials, used to determine the bearing of a distant radio station
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Derived Formsgoniometric (ˌɡəʊnɪəˈmɛtrɪk) or goniometrical, adjectivegoniometrically, adverbgoniometry, noun

Word Origin for goniometer

C18: via French from Greek gōnia angle
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
goniometry in Medicine

goniometer

(gō′nē-ŏm′ĭ-tər)
n.
  1. An optical instrument for measuring crystal angles, as between crystal faces.
  2. arthrometer
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.