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spectroheliograph

[spek-troh-hee-lee-uh-graf, -grahf] /ˌspɛk troʊˈhi li əˌgræf, -ˌgrɑf/
noun
1.
an apparatus for making photographs of the sun with a monochromatic light to show the details of the sun's surface and surroundings as they would appear if the sun emitted only that light.
Origin
1890-1895
1890-95; spectro- + heliograph
Related forms
spectroheliographic
[spek-troh-hee-lee-uh-graf-ik] /ˌspɛk troʊˌhi li əˈgræf ɪk/ (Show IPA),
adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for spectroheliographic

spectroheliograph

/ˌspɛktrəʊˈhiːlɪəˌɡrɑːf; -ˌɡræf/
noun
1.
an instrument used to obtain an image of the sun in light of a particular wavelength, such as calcium or hydrogen, to show the distribution of the element over the surface and in the solar atmosphere. The image obtained is a spectroheliogram
Derived Forms
spectroheliographic, adjective
Word Origin
C19: from spectro- + helio- + -graph
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
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