plenumbra ( synonym found)
Definition of plenumbra:

°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.
Definition of plenumbra:

°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.
Back to Top