Penumbra - definition, pronunciation, transcription
Amer.
|pəˈnʌmbrə|
Brit.
|pɪˈnʌmbrə|
noun
- a fringe region of partial shadow around an umbra
Extra examples
...the lunar eclipse began with a subtle darkening of the lunar surface as it passed within the Earth's penumbra...
...a penumbra of despair fell over the doomed city...
Word forms
noun
singular: penumbra
plural: penumbras
singular: penumbra
plural: penumbras
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