Online Google Dictionary

umber 中文解釋 wordnet sense Collocation Usage Collins Definition
Noun
/ˈəmbər/,
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umbers, plural;
  1. A natural pigment resembling but darker than ocher, normally dark yellowish-brown in color (raw umber) or dark brown when roasted (burnt umber)

  2. The color of this pigment

  3. A brownish-gray moth with coloring that resembles tree bark

  1. of the color of any of various natural brown earth pigments
  2. chocolate: a medium brown to dark-brown color
  3. Umber is a natural brown clay pigment which contains iron and manganese oxides. The color becomes more intense when calcined (heated), and the resulting pigment is called burnt umber. ...
  4. A brown or reddish pigment used in painting, obtained from certain natural clays variously colored by the oxides of iron and manganese; a reddish brown colour, like that of the pigment; of a reddish brown colour, like that of the pigment
  5. A brown powder made from clay. It was used to make colored ink.
  6. A mineral solid which exists in a range of brown hues. Chemically, umber is mostly a mixture of hydrous ferric oxide (Fe2O ^. xH2O) and manganese dioxide (MnO2). It was believed by many in the eighteenth century to be a fossil wood originally found in Umbria near Spoleto in Italy.
  7. A Hydrated ferric oxide, chestnut brown to liver brown in colour, used as a pigment. As found in nature, the oxide is called raw umber, and when heated, so as to produce a reddish brown, is known as burnt umber.
  8. Used exclusively as a brown pigment. It is a hydrated iron manganese ore running from olive shades in the raw condition and dark rich brown shades in the burnt stage.
  9. a brown variety of iron oxide pigment.
  10. raw or burnt - a blue-brown (if raw) or deep redish-brown (if roasted) pigment made from rust-stained earth colored by oxides of iron and manganese. Umbers are earth pigments similar to ochre and sienna.
  11. of a dusky hue; brownish