Umbra
/ˈʌmbɹə/
noun
The fully shaded inner region of a shadow cast by an opaque object.
The central region of a sunspot.
A shadow.
/ˈʌmbɹə/
The fully shaded inner region of a shadow cast by an opaque object.
The central region of a sunspot.
A shadow.
Loading dictionaries...
Initializing dictionary manager