What is a yellow crystalline substance extracted from fustet, and regarded as its essential coloring principle; -- called also fisetic acid called?
fisetin — A yellow crystalline substance extracted from fustet, and regarded as its essential coloring principle; -- called also fisetic acid. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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