Meaning of Penumbra



English: Penumbra
Bangla: উপচ্ছায়া
Hindi:
Type: Unknown / অজানা / अज्ञात
Synonym:
Antonym:


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Bangla Academy Dictionary:


Definition: 1

Astronomy. the partial or imperfect shadow outside the complete shadow of an opaque body, as a planet, where the light from the source of illumination is only partly cut off. Compare umbra (def 3a). the grayish marginal portion of a sunspot. Compare umbra (def 3b).

Definition: 2

a shadowy, indefinite, or marginal area.

Definition: 3

a fringe region of half shadow resulting from the partial obstruction of light by an opaque object

Definition: 4

(astronomy) the lighter and outer region of a sunspot

Definition: 5

(painting) the point or area in which light and shade blend