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.
An area of uncertainty or intermediacy between two mutually exclusive states or categories.
An area that lies on the edge of something; a fringe.
Something implied by, the existence of something else that is necessary for the second thing to be full and complete in its essential aspects.
(in "ischaemic penumbra", after a stroke) A region of the brain that has lost only some of its blood supply, and retains structural integrity but has lost function.
The fully shaded inner region of a shadow cast by an opaque object.
The central region of a sunspot.
A shadow.
An uninvited guest brought along by one who was invited.
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.
The part of a picture where the shade imperceptibly blends with the light.
The conical shadow projected from a planet or satellite, on the side opposite to the sun, within which a spectator could see no portion of the sun's disk; - used in contradistinction from penumbra. See Penumbra.
Any one of several species of sciænoid food fishes of the genus Umbrina, especially the Mediterranean species (Umbrina cirrhosa), which is highly esteemed as a market fish; - called also ombre, and umbrine.
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.
An area of uncertainty or intermediacy between two mutually exclusive states or categories.
An area that lies on the edge of something; a fringe.
Something implied by, the existence of something else that is necessary for the second thing to be full and complete in its essential aspects.
(in "ischaemic penumbra", after a stroke) A region of the brain that has lost only some of its blood supply, and retains structural integrity but has lost function.
The fully shaded inner region of a shadow cast by an opaque object.
The central region of a sunspot.
A shadow.
An uninvited guest brought along by one who was invited.
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.
The part of a picture where the shade imperceptibly blends with the light.
The conical shadow projected from a planet or satellite, on the side opposite to the sun, within which a spectator could see no portion of the sun's disk; - used in contradistinction from penumbra. See Penumbra.
Any one of several species of sciænoid food fishes of the genus Umbrina, especially the Mediterranean species (Umbrina cirrhosa), which is highly esteemed as a market fish; - called also ombre, and umbrine.