Entry from British & World English dictionary
1An acacia tree with violet-scented flowers that yield an essential oil used in perfumery, native to warm regions of America and cultivated elsewhere.
- Acacia farnesiana, family Leguminosae
2A yellow-flowered Mediterranean plant of the parsley family.
- Opopanax chironium, family Umbelliferae
2.1 (also gum opopanax) [mass noun] A fetid gum resin obtained from the roots of the Mediterranean opopanax, used in perfumery. 3 [mass noun] A fragrant gum resin which is used in perfumery.
- This resin is obtained from the tree Commiphora kataf, family Burseraceae
late Middle English: via Latin from Greek, from opos 'juice' + panax 'all-healing'; compare with panacea.
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