Definition of helioscopes Helioscopes
We found 2 definitions of helioscopes from 1 different sources.
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What does helioscopes mean?
Wiktionary 
- helioscopes (Noun)
Plural of helioscope.
Webster DictionaryWebster's Unabridged Dictionary 📘
- helioscope (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.
Chambers DictionaryChamber's 20th Century Dictionary 📕
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helioscope
hē′li-o-skōp, n. a telescope for viewing the sun without injury to the eyes, by means of blackened glass or mirrors that reflect only a part of the light.—adj. Helioscop′ic. [Fr. hélioscope—Gr. hēlios, the sun, skopein, to look, to spy.]
