penumbra
nounfeminine/pɨˈnũbɾɐ/medium
pe·num·bra
Definition
A partial shadow between full light and total darkness; a dim, diffuse light.
The penumbra in the room was soothing.
A lunar eclipse has a penumbral phase.
Common collocations
penumbral zonelive in penumbrapenumbral eclipse
Etymology
Do latim 'paene' (quase) + 'umbra' (sombra).