umbra
/ˈʌmbrə/
noun
Origin
Latin
umbra — shadow
Overview
Meaning Now
- The darkest, central part of a shadow, especially that cast by the earth or moon during an eclipse.
- A shaded area or shadow; a ghost or phantom.
Literal older meaning
shadow, shade
Language path
Proto-Indo-European → Latin → English
Earliest form
umbra
Earliest period
16th century
Journey
The term 'umbra' is primarily used in astronomy to describe the distinct zones of a shadow during an eclipse, contrasted with the 'penumbra' (partial shadow). In classical antiquity, it was also used metaphorically to refer to spirits of the dead, as shadows were seen as the remaining trace of a person's physical presence.
Evolution
- Proto-Indo-European
*n-dʰ-r-o-
“darkness or shadow”
Reconstructed root
- Old Latin
omra
“shadow”
- Classical Latin
umbra
“shadow, shade”
Standardized form
- Middle English
umbre
“shadow”
Loanword via Old French
- Modern English
umbra
“darkest part of a shadow”
Technical sense solidified
Connections
Word parts
umbra
root
shadow
Related across languages
Italian
ombra
shadow
French
ombre
shadow
Spanish
sombra
shadow
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Related to umbra
External references use DefinedTerm semantics.