Thesaurus: penumbra

Related headwords

Definitions

1. n. An incomplete or partial shadow.
2. 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. n. The part of a picture where the shade imperceptibly blends with the light.
4. n. a fringe region of partial shadow around an umbra
5. 1. An incomplete or partial shadow. 2. (Astron.) 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. Sir I. Newton. Note: The faint shade surrounding the dark central portion of a solar spot is also called the penumbra, and sometimes umbra. 3. (Paint.) The part of a picture where the shade imperceptibly blends with the light.
6. The shadow cast, in an eclipse, where the light is partly, butnot wholly, cut off by the intervening body; the space of partialillumination between the umbra, or perfect shadow, on all sides, andthe full light. Sir I. Newton.
7. n:100 n. a fringe region of partial shadow around an umbra