A rare organic compound or pigment historically derived from anthracene sources, now mainly of historical chemical interest.
From 'anthracene' and Greek 'chrysos' (golden), literally 'anthracene-golden,' referring to its suspected golden-yellow color or origin.
This is such a specific and rarely-used chemical term that even modern chemists often don't recognize it—it's the kind of word that survives in old textbooks as a ghost of chemical research from 150 years ago!
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