Definition of "iridoid" [iridoid]

• Any cyclic monoterpenoid based on 1-isopropyl-2,3-dimethylcyclopentane (noun)

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• "Although the exact mechanism of the therapeutic action of grapple on arthritic cases is not known, the active components of the storage tubers were identified as far back as 1962, by Lux and Tinmann, who identified iridoid glucosides."
• "Tahitian Noni International is a global, research-driven bioactive products company that was the first to introduce the health benefits of the noni plant -- a bioactive-rich, adaptogenic plant, containing iridoid compounds -- to the world outside of Tahiti."
• "The major constituents in plantain are mucilage, iridoid glycosides (particularly aucubin), and tannins."