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10 points
TERPENES is validvalid
TERPENE, a chemical compound [n]
TERPENE, any of a class of volatile aromatic hydrocarbons, many of which occur in essential plant oils, esp. of conifers and citrus trees [n]
TERPENE, a chemical compound [n]
TERPENE, any of a class of volatile aromatic hydrocarbons, many of which occur in essential plant oils, esp. of conifers and citrus trees [n]