sienna
noun
- an earth pigment containing iron and manganese oxides, yellowish-brown in the natural state and reddish-brown when burnt
- either of these colors
See sienna in American Heritage Dictionary 4
(sē-ĕnˈə)
noun- A special clay containing iron and manganese oxides, used as a pigment for oil and watercolor painting.
a. Raw sienna.
b. Burnt sienna.
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