Definitions for umbraˈʌm brə

This page provides all possible meanings and translations of the word umbra

Random House Webster's College Dictionary

um•bra*ˈʌm brə(n.)(pl.)-bras, -brae

  1. shade; shadow.

  2. the usual accompaniment or companion of a person or thing.

  3. Astron. the complete or perfect shadow of an opaque body, as a planet, where the direct light from the source of illumination is completely cut off. the dark central portion of a sunspot.

    Category: Astronomy

  4. a phantom or ghost.

* (-brē)..

Origin of umbra:

1590–1600; < L: shade, shadow

um′bral(adj.)

Princeton's WordNet

  1. umbra(noun)

    a region of complete shadow resulting from total obstruction of light

Wiktionary

  1. umbra(Noun)

    A shadow.

  2. umbra(Noun)

    The central region of a sunspot.

  3. Origin: From umbra.

Webster Dictionary

  1. Umbra(noun)

    the conical shadow projected from a planet or satellite, on the side opposite to the sun, within which a spectator could see no portion of the sun's disk; -- used in contradistinction from penumbra. See Penumbra

  2. Umbra(noun)

    the central dark portion, or nucleus, of a sun spot

  3. Umbra(noun)

    the fainter part of a sun spot; -- now more commonly called penumbra

  4. Umbra(noun)

    any one of several species of sciaenoid food fishes of the genus Umbrina, especially the Mediterranean species (U. cirrhosa), which is highly esteemed as a market fish; -- called also ombre, and umbrine

Freebase

  1. Umbra

    The umbra, penumbra and antumbra are the names given to three distinct parts of a shadow, created by any light source after impinging on an opaque object. For a point source only the umbra is cast. These names are most often used to refer to the shadows cast by celestial bodies, though they are sometimes used to describe levels of darkness, such as in sunspots.


Translations for umbra

Kernerman English Multilingual Dictionary

shadow(noun)

(a patch of) shade on the ground etc caused by an object blocking the light

We are in the shadow of that building.

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