|terpenoid (tûr'pə-noid') Pronunciation Key
Any of a class of hydrocarbons that consist of terpenes attached to an oxygen-containing group. Terpenoids are widely found in plants, and can form cyclic structures such as sterols.
any of a class of hydrocarbons occurring widely in plants and animals and empirically regarded as built up from isoprene, a hydrocarbon consisting of five carbon atoms attached to eight hydrogen atoms (C5H8). The term is often extended to the terpenoids, which are oxygenated derivatives of these hydrocarbons.
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