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umber: see ocher ocher , mixture of varying proportions of iron oxide and clay, used as a pigment. It occurs naturally as yellow ocher (yellow or yellow-brown in color), the iron oxide being limonite, or as red ocher, the iron oxide being hematite.
..... 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. umber A naturally occurring brown siliceous earth, containing hydrated iron oxide with small amounts of manganese oxide; used as a pigment in paint; turns red to reddish-brown when calcined, and then is called burnt umber. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | Take an umbered ticket and we'll be right with you," said an old bespectacled stag from behind the desk. |
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Umbellales umbellar umbellate umbellate umbellated umbellately umbellet Umbellic Umbellic acid umbellifer umbellifer Umbelliferae Umbelliferae Umbelliferone Umbelliferones umbelliferous umbelliferous umbelliferous plant umbellifers umbelliform Umbellularia Umbellularia californica Umbellularia californica umbellule Umbels Umbels umber umber umber umber moth umbered umberingumbering umbers umbers Umberto Umberto Avgustovich Masetti Umberto Boccioni Umberto Boccioni Umberto Eco Umberto Elia Terracini Umberto I Umberto I Umberto I of Italy Umberto I of Italy Umberto II Umberto II Umberto II of Italy Umberto II of Italy Umberto Masetti Umberto Nobile Umberto Poli Umberto Saba Umbery UMBF UMBFS UMBH UMBHA UMBI UMBIDA Umbilic | |||||||
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