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penumbra

   Also found in: Dictionary/thesaurus, Medical, Legal, Wikipedia, Hutchinson 0.56 sec.
penumbra (pĭnŭm`brə): see eclipse eclipse (ēklĭps`, ĭ–) [Gr.
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; sunspots sunspots, dark, usually irregularly shaped spots on the sun's surface that are actually solar magnetic storms. The Chinese recorded dark features on the sun seen with the naked eye in 28 B.C.
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Slowly the penumbra, the shadow of a shadow, crept on over the bright surface, and as it crept I heard deep gasps of fear rising from the multitude around.
The penumbra, dense and dark, was the virtual screen of a figure which stood in it as still as some image erect in a niche or as some black-vizored sentinel guarding a treasure.
 
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