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Definition of Sienna
1. Noun. An earth color containing ferric oxides; used as a pigment.
Definition of Sienna
1. n. Clay that is colored red or brown by the oxides of iron or manganese, and used as a pigment. It is used either in the raw state or burnt.
Definition of Sienna
1. Proper noun. (English female given name) of modern usage from the sienna colour. ¹
2. Noun. a form of clay containing iron and manganese. ¹
3. Noun. a pigment with a reddish-brown colour. ¹
4. Noun. a light reddish-brown colour. ¹
5. Adjective. having a reddish-brown colour. ¹
¹ Source: wiktionary.com
Definition of Sienna
1. a brown pigment [n -S]
Medical Definition of Sienna
1.