si·en·na

[see-en-uh]
noun
1.
a ferruginous earth used as a yellowish-brown pigment (raw sienna) or, after roasting in a furnace, as a reddish-brown pigment (burnt sienna)
2.
the color of such a pigment.

Origin:
1750–60; < Italian (terra di) Sien(n)a (earth of) Siena

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World English Dictionary
sienna (sɪˈɛnə) [Click for IPA pronunciation guide]
 
n
1.  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)
2.  See also burnt sienna the colour of this pigment
 
[C18: from Italian terra di Siena earth of Siena]

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Sienna is always a great word to know.
So is ort. Does it mean:
a fool or simpleton; ninny.
a scrap or morsel of food left at a meal.
Etymonline
Word Origin & History

sienna
1760, from It. terra di Sienna "earth of Siena," city in central Italy, where the coloring material was first produced. The city name probably is from Senones, the name of a Gaulish people who settled there in ancient times.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Long, thick fur gives raccoons a typical gray-brown color, with variations ranging from sienna to silver.
From burnt sienna to periwinkle, the crayons stood at attention, immaculate and pointy with possibilities.
Sienna is intermediate in color and composition between ocher and umber.
The paint was supposed to be mixed of natural burnt sienna, applied in layers.
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