Traduction et analyse de mots par intelligence artificielle ChatGPT
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Qu'est-ce (qui) est Ocher - définition
![villas]] and towns.](https://commons.wikimedia.org/wiki/Special:FilePath/Harfenspielerin Römisches Fresko.jpg?width=200 "villas]] and towns.")
![a traditional ochre pigment]]](https://commons.wikimedia.org/wiki/Special:FilePath/Namibie Himba 0717a.jpg?width=200 "a traditional ochre pigment]]")
![Aboriginal]] ceremony and artwork. [[Ochre Pits]], Namatjira Drive, [[Northern Territory]]](https://commons.wikimedia.org/wiki/Special:FilePath/OchrePits.JPG?width=200 "Aboriginal]] ceremony and artwork. [[Ochre Pits]], Namatjira Drive, [[Northern Territory]]")
![Ochre paintings in the Tomb of Nakht in [[Ancient Egypt]] (15th century BC).](https://commons.wikimedia.org/wiki/Special:FilePath/Tomb of Nakht.jpg?width=200 "Ochre paintings in the Tomb of Nakht in [[Ancient Egypt]] (15th century BC).")
![Limonite, a [[mineraloid]] containing iron hydroxide, is the main ingredient of all the ochre pigments.](https://commons.wikimedia.org/wiki/Special:FilePath/LimoniteUSGOV.jpg?width=200 "Limonite, a [[mineraloid]] containing iron hydroxide, is the main ingredient of all the ochre pigments.")
![The clay hills of [[Roussillon, Vaucluse]], in [[Provence]] have been an important source of ochre pigment since the 18th century.](https://commons.wikimedia.org/wiki/Special:FilePath/Sentier des ocres 1.JPG?width=200 "The clay hills of [[Roussillon, Vaucluse]], in [[Provence]] have been an important source of ochre pigment since the 18th century.")
![Image of a horse coloured with [[yellow ochre]] (17,300 BC) from [[Lascaux]] cave, France.](https://commons.wikimedia.org/wiki/Special:FilePath/Lascaux2.jpg?width=200 "Image of a horse coloured with [[yellow ochre]] (17,300 BC) from [[Lascaux]] cave, France.")
![Image of a human hand created with red ochre in [[Pech Merle]] cave, France ([[Gravettian]] era, 25,000 BC).](https://commons.wikimedia.org/wiki/Special:FilePath/Pech Merle main.jpg?width=200 "Image of a human hand created with red ochre in [[Pech Merle]] cave, France ([[Gravettian]] era, 25,000 BC).")
Wikipédia
Ochre ( OH-kər; from Ancient Greek ὤχρα (ṓkhra), from ὠχρός (ōkhrós) 'pale'), or ocher in American English, is a natural clay earth pigment, a mixture of ferric oxide and varying amounts of clay and sand. It ranges in colour from yellow to deep orange or brown. It is also the name of the colours produced by this pigment, especially a light brownish-yellow. A variant of ochre containing a large amount of hematite, or dehydrated iron oxide, has a reddish tint known as "red ochre" (or, in some dialects, ruddle).
The word ochre also describes clays coloured with iron oxide derived during the extraction of tin and copper.
