Umbra Definition

ŭmbrə
umbrae, umbras
noun
Shade or a shadow.
Webster's New World
The dark central cone of shadow projecting from a planet or satellite on the side opposite the sun.
Webster's New World
A perfect or complete shadow, in which no direct light is received from the source of illumination.
Webster's New World
The dark central part of a sunspot.
Webster's New World
A phantom, or ghost.
Webster's New World
Synonyms:
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Other Word Forms of Umbra

Noun

Singular:
umbra
Plural:
umbrae, umbras

Origin of Umbra

  • From Latin umbra (“shadow").

    From Wiktionary

  • Latin shadow

    From American Heritage Dictionary of the English Language, 5th Edition

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umbra