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Definition of umbra noun from the Oxford Advanced Learner's Dictionary

umbra

noun
 
/ˈʌmbrə/
 
/ˈʌmbrə/
(plural umbras, umbrae
 
/ˈʌmbriː/
 
/ˈʌmbriː/
)
(specialist)
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  1. the darkest part of a shadow
  2. the area on the earth or the moon that is the darkest during an eclipse compare penumbra
    3. Word Originlate 16th cent. (denoting a phantom or ghost): from Latin, literally ‘shade’.
See umbra in the Oxford Advanced American Dictionary
Check pronunciation: umbra

Nearby words

trait
noun
 
 
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