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Umbra
/ˈʌmbɹə/
The fully shaded inner region of a shadow cast by an opaque object.
📖 Definitions of "Umbra"
noun
- 1
The fully shaded inner region of a shadow cast by an opaque object.
- 2
The central region of a sunspot.
- 3
A shadow.
- 4
An uninvited guest brought along by one who was invited.
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