penumbras
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English
Etymology
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Noun
penumbras noun
- A partially shaded area around the edges of a shadow, especially an eclipse.
- A region around the edge of a sunspot, darker than the sun's surface but lighter than the middle of the sunspot.
- An area of uncertainty or intermediacy between two mutually exclusive states or categories.
- An area that lies on the edge of something; a fringe.
Verb
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