spectrometer

UK: /spɛkˈtrɒmɪtə/ US: (spek trom′i tər)

WordReference Random House Unabridged Dictionary of American English © 2026

spec•trom•e•ter  (spek trom′i tər), n. [Optics.]

1. Optics an optical device for measuring wavelengths, deviation of refracted rays, and angles between faces of a prism, esp. an instrument (prism spectrometer) consisting of a slit through which light passes, a collimator, a prism that deviates the light, and a telescope through which the deviated light is viewed and examined.

• 1870–75; spectro- + -meter

spec•tro•met•ric  (spek′trə me′trik), adj.  spec•trom′e•try, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

spectrometer / spɛkˈtrɒmɪtə/ noun

1. any instrument for producing a spectrum, esp one in which wavelength, energy, intensity, etc, can be measured
   See also mass spectrometer

spectrometric / ˌspɛktrəʊˈmɛtrɪk/ adjective

specˈtrometry noun