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Penumbra
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Meaning
Noun
●
A
partially
shaded
area around the
edges
of a
shadow
, especially an eclipse.
●
In Astronomy:
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 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.
●
In Medicine:
A
region
of the
brain
that has
lost
only some of its
blood supply
, and
retains
structural integrity
but has
lost
function.
Sourced from
Wiktionary
Origin
penumbra
English
penumbra
Latin
Sourced from
Etym
Related
Shadow
Umbra
Myocardium
Sclera
Firmament
Choroid
Sphincter
Lobe
Nebula
Glow
Core
Miasma
Expanse
Fog
Constellation
Sinus
Lesion
Cornea
Corona
Iris
Fissure
Retina
Cortex
Macula
Pulsar
Endothelium
Lumen
Kaleidoscope
Murkiness
Region
Pleiades
Fovea
Constriction
Peritoneum
Cloud
Conjunctiva
Infarct
Boundary
Depolarization
Ossicles
Milky Way
Kuiper Belt
Aurora Borealis
Oort Cloud
Blood Supply
Event Horizon
Rising Sun
More
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