A gum resin, the inspissated exudate from the root of Ferula foetida (family Umbelliferae); malodorous material used as a repellent against dogs, cats, and rabbits, and formerly used as an antispasmodic; in Asia, used as a condiment and flavoring agent.
[Pers. aza, mastic, + L. fetidus, fetid]
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Examples: glitazone, GI cocktail, etc.