Definition of spectroheliograph in English:

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spectroheliograph

Pronunciation: /ˌspektrōˈhēlēəɡraf/

noun

An instrument for taking photographs of the sun in light of one wavelength only.
Example sentences
  • He invented the spectroheliograph in 1892, a device that allowed him to view the sun in individual wavelengths of light.
  • Hale also gained prominence as an astronomer with his invention of the spectroheliograph and the discovery of magnetic fields in sunspots.
  • The most important advantages of this form of spectroheliograph is the large field photographed.

For editors and proofreaders

Syllabification: spec·tro·he·li·o·graph

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