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Definitions from Wiktionary ()
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▸ noun: (astronomy) A region around the edge of a sunspot, darker than the sun's surface but lighter than the middle of the sunspot.
▸ noun: (figuratively) An area of uncertainty or intermediacy between two mutually exclusive states or categories.
▸ noun: (figuratively) An area that lies on the edge of something; a fringe.
▸ noun: Something related to, connected to, and implied by, the existence of something else that is necessary for the second thing to be full and complete in its essential aspects.
▸ noun: (medicine, preceded by "ischaemic", 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.
Similar:
umbra,
antumbra,
border,
undermargin,
ambitus,
periphery,
fringe,
ingress,
outskirt,
perimatrix,
more...
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