spectroheliograph

POS

Noun

HYPHEN

spec=tro=he=li=o=graph

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CIDE DICTIONARY

spectroheliograph, n.

An apparatus for making spectroheliograms, consisting of a spectroscopic camera used in combination with a telescope, and provided with clockwork for moving the sun's image across the slit. [Webster 1913 Suppl.]

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OXFORD DICTIONARY

spectroheliograph, n. an instrument for taking photographs of the sun in the light of one wavelength only.

For further exploring for "spectroheliograph" in Webster Dictionary Online

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