usnic acid
/ˈʌznɪk
/noun [mass noun] Biochemistry
A yellow crystalline compound which is present in many lichens and is used as an antibiotic.
- A tricyclic phenol; chemical formula: C18H16O7.
- Although several synthetic compounds inhibit this key pigment enzyme, the scientists found that usnic acid was over 10 times more effective than others tested.
- I don't know anyone else who's working on the toxicity of usnic acid besides me.
Origin
Mid 19th century: usnic from medieval Latin usnea (from Arabic ushnah 'moss') + -ic.
- Parochial Church Councillor
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