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umber: see ocher ocher (ō`kər), mixture of varying proportions of iron oxide and clay, used as a pigment . ..... Click the link for more information. . umber 1. any of various natural brown earths containing ferric oxide together with lime and oxides of aluminium, manganese, and silicon 2. any of the dark brown to greenish-brown colours produced by this pigment 3. Obsolete a. any dark, dusky, or indefinite colour umber [′əm·bər] (materials) A naturally occurring brown siliceous earth, deriving its color from iron oxides and manganese oxide; used as a paint pigment. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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