umber


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umber:

see ocherocher
, 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.
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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.

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
References in periodicals archive ?
Add random circles by applying umber and terracotta paints to different-sized round objects, then stamp the circles onto each canvas in a pleasing arrangement.
A retired detective, originally on the case, seeks Umber out and convinces him to assist in investigating the truth of the incident, even though a convicted sex offender had confessed to the kidnapping.
Lastly, Wharton Business School graduate Umber Ahmad, whose parents moved from Pakistan to give their daughters more options, finds the summer as an intern at a brokerage house more all-consuming than she first expected.
Envoy Lakhdar Brahimi is being accompanied by Ibrahim Bakr, special envoy of the Jeddah-based Organization of Islamic Conference (OIC), and is scheduled to meet Taliban chief Mullah Mohammad Umber, said an Afghan Islamic Press (AIP) report quoting Taliban officials.
But scientists have come up with a n umber of indirect approaches, including the study of marks left by the brain on the inside of fossil skulls, the use of the jaw and skull base as an index of speech ability and the comparison of brain-cell circuits controlling modern human language with those orchestrating the vocal calls of monkeys.
Dave Umber is president and CEO of two successful stores in Fort Wayne, Indiana.
Dean Jagger made his sweary debut as the towering character Smalljon Umber.
The rocky side to the waterfall was done with my flat brush and raw umber with a touch of ultramarine blue to darken it slightly.
The range-topping Exclaim has an optional Umber Colour Package, featuring premium Nappa leather seating surfaces and door armrest accents.
Mum-of-two Lucy Brierley, from Danescourt, Cardiff, has discovered what she believes is a real hidden gem in Taffs Well There is a little place called Umber and Sienna Art Cafe in Taffs Well, just off the Taff Trail, that I love.
Sabzi Mandi police arrested 4 criminals namely Muhammad Rehan , Manzoor , Umber and Afghani Amir and recovered 115 gram heroine, one rifle 8 MM, 2 Magazines along with 410 cartridges from their possession.