spectroheliogram

noun spec·tro·he·lio·gram \ ˌspek-trō-ˈhē-lē-ə-ˌgram \

Definition of spectroheliogram

: a photograph of the sun that is made by monochromatic light and shows the sun's faculae and prominences

First Known Use of spectroheliogram

1905

in the meaning defined above

See Words from the same year
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