[1] : The Collaborative International Dictionary of English v.0.48

ombre \om"bre\, n. f., of uncertain origin. zool.
   a large mediterranean food fish umbrina cirrhosa: --
   called also umbra, and umbrine.
   1913 webster
see also:
umbrina cirrhosa umbra umbrine 

[2] : The Collaborative International Dictionary of English v.0.48

penumbra \penum"bra\, n. nl., fr. l. paene almost + umbra
   shade.
   1. an incomplete or partial shadow.
      1913 webster

   2. astron. the shadow cast, in an eclipse, where the light
      is partly, but not wholly, cut off by the intervening
      body; the space of partial illumination between the umbra,
      or perfect shadow, on all sides, and the full light. --sir
      i. newton.
      1913 webster

   note: the faint shade surrounding the dark central portion of
         a solar spot is also called the penumbra, and
         sometimes umbra.
         1913 webster

   3. paint. the part of a picture where the shade
      imperceptibly blends with the light.
      1913 webster
see also:
penumbra umbra 

[3] : The Collaborative International Dictionary of English v.0.48

umbra \um"bra\, n.; pl. umbrae. l., a shadow.
   1. astron.
      a 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.
      b the central dark portion, or nucleus, of a sun spot.
      c the fainter part of a sun spot; -- now more commonly
          called penumbra.
          1913 webster

   2. zool. any one of several species of sciaenoid food
      fishes of the genus umbrina, especially the
      mediterranean species umbrina cirrhosa, which is
      highly esteemed as a market fish; -- called also ombre,
      and umbrine.
      1913 webster

   umbra tree bot., a tree phytolacca dioica of the same
      genus as pokeweed. it is native of south america, but is
      now grown in southern europe. it has large dark leaves,
      and a somber aspect. the juice of its berries is used for
      coloring wine. --j. smith dict. econ. plants.
      1913 webster
see also:
umbrae penumbra umbrina umbrina cirrhosa ombre umbrine 
umbra tree phytolacca dioica 

[4] : WordNet (r) 2.0

umbra
     n : a region of complete shadow resulting from total obstruction
         of light
     also: umbrae pl
see also:
umbrae 

[5] : Moby Thesaurus II by Grady Ward, 1.0

21 moby thesaurus words for "umbra":
   adumbration, dark shade, eidolon, ghost, gloom, haunt, mere shadow,
   penumbra, phantasm, phantom, revenant, shade, shadiness, shadow,
   shadows numberless, silhouette, skiagram, skiagraph, spook,
   umbrage, umbrageousness

Umbra >> U Words
Umbra, definition of term: Umbra
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