First Known Use: 1906
Dictionary
spectrohelioscope
noun spec·tro·he·lio·scope \-ˈhē-lē-ə-ˌskōp\
Definition of SPECTROHELIOSCOPE
2
: an instrument similar to a spectroheliograph used for visual as distinguished from photographic observations
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Origin of SPECTROHELIOSCOPE
International Scientific Vocabulary
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