Penumbra meaning in Urdu & English

(1) - Penumbra (n.) The part of a picture where the shade imperceptibly blends with the light.
(2) - Penumbra (n.) The shadow cast, in an eclipse, where the light is partly, but not wholly, cut off by the intervening body; the space of partial illumination between the umbra, or perfect shadow, on all sides, and the full light.
(3) - Penumbra (n.) An incomplete or partial shadow.

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