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Definition of Helioscope
1. n. A telescope or instrument for viewing the sun without injury to the eyes, as through colored glasses, or with mirrors which reflect but a small portion of light.
Definition of Helioscope
1. Noun. (astronomy) An apparatus for viewing the sun without injuring the eye. ¹
¹ Source: wiktionary.com
Medical Definition of Helioscope
1.