spectroheliograph

noun
spec·​tro·​he·​lio·​graph | \ˌspek-trō-ˈhē-lē-ə-ˌgraf \

Definition of spectroheliograph 

: an apparatus for making spectroheliograms

Other Words from spectroheliograph

spectroheliography \ ˌspek-​trō-​ˌhē-​lē-​ˈä-​grə-​fē \ noun

First Known Use of spectroheliograph

1892, in the meaning defined above

History and Etymology for spectroheliograph

International Scientific Vocabulary

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The first known use of spectroheliograph was in 1892

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