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[see-en-uh] /siˈɛn ə/
a ferruginous earth used as a yellowish-brown pigment (raw sienna) or, after roasting in a furnace, as a reddish-brown pigment (burnt sienna)
the color of such a pigment.
Origin of sienna
1750-60; < Italian (terra di) Sien(n)a (earth of) Siena Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for sienna
  • From burnt sienna to periwinkle, the crayons stood at attention, immaculate and pointy with possibilities.
  • The paint was supposed to be mixed of natural burnt sienna, applied in layers.
  • sienna is intermediate in color and composition between ocher and umber.
  • Long, thick fur gives raccoons a typical gray-brown color, with variations ranging from sienna to silver.
British Dictionary definitions for sienna


a natural earth containing ferric oxide used as a yellowish-brown pigment when untreated (raw sienna) or a reddish-brown pigment when roasted (burnt sienna)
the colour of this pigment See also burnt sienna
Word Origin
C18: from Italian terra di Siena earth of Siena
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for sienna


city in central Italy, probably from Senones, the name of a Gaulish people who settled there in ancient times. Related: Sienese. The brownish-ochre color (1760) is from Italian terra di Sienna "earth of Siena," where the coloring material first was produced.

Online Etymology Dictionary, © 2010 Douglas Harper
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