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umbra |
Also found in: Wikipedia, Hutchinson | 0.10 sec. |
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umbra: see eclipse eclipse (ēklĭps`, ĭ–) [Gr. ..... Click the link for more information. ; 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. ..... Click the link for more information. . umbra 1. a region of complete shadow resulting from the total obstruction of light by an opaque object, esp the shadow cast by the moon onto the earth during a solar eclipse 2. the darker inner region of a sunspot |
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