spectroheliogram

 [spek-troh-hee-lee-uh-gram]  

spec·tro·he·li·o·gram

   [spek-troh-hee-lee-uh-gram]
noun
a photograph of the sun made with a spectroheliograph.
Origin:
1905–10; spectro- + heliogram
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Spectroheliogram has a plethora of syllables.
So is pneumonoultramicroscopicsilicovolcanoconiosis. Does it mean:
an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language.
given to using long words.
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