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2 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 spec·tro·he·lio·gram /ˌspɛktroˈhiliəˌgræm/

From: Webster's Revised Unabridged Dictionary (1913)

 Spec·tro·he·li·o·gram n.   Astrophysics A photograph of the sun made by monochromatic light, usually of the calcium line (k), and showing the sun's faculae and prominences.
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