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helioscopeHE'LIOSCOPE, n. [Gr. the sun, and to view.] A sort of telescope fitted for viewing the sun without pain or injury to the eyes, as when made with colored glasses, or glasses blackened with smoke. |
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helioscopeHE'LIOSCOPE, n. [Gr. the sun, and to view.] A sort of telescope fitted for viewing the sun without pain or injury to the eyes, as when made with colored glasses, or glasses blackened with smoke. |