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band spectrum

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noun Physics.
  1. an optical spectrum consisting of groups of closely spaced spectral lines, characteristic of molecules.
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Origin of band spectrum

First recorded in 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for band spectrum

band spectrum

noun
  1. a spectrum consisting of a number of bands of closely spaced lines that are associated with emission or absorption of radiation by molecules
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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