meaning of penumbra
1. An incomplete or partial shadow.
2. 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. The part of a picture where the shade imperceptibly blends with the light.
4. a fringe region of partial shadow around an umbra
Related Words
penumbra | penumbral | penumbrala |
