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spectrohelioscope

[spek-troh-hee-lee-uh-skohp]
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noun
  1. a spectroheliograph.
  2. a similar instrument, used for visual instead of photographic observations.
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Origin of spectrohelioscope

First recorded in 1925–30; spectro- + helio- + -scope
Related formsspec·tro·he·li·o·scop·ic [spek-troh-hee-lee-uh-skop-ik] /ˌspɛk troʊˌhi li əˈskɒp ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for spectrohelioscope

spectrohelioscope

noun
  1. an instrument, similar to the spectroheliograph, used for observing solar radiation at one particular wavelength
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Derived Formsspectrohelioscopic (ˌspɛktrəʊˌhiːlɪəʊˈskɒpɪk), adjective
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