terpenic acid

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Resin acid — Resin acids are protectants and wood preservatives that are produced by parenchymatous epithelial cells that surround the resin ducts in trees from temperate coniferous forests. The resin acids are formed when two and three carbon molecules… … Wikipedia
terpene — terpeneless, adj. terpenic /terr pee nik/, adj. /terr peen/, n. Chem. 1. (originally) any of a class of monocyclic hydrocarbons of the formula C10H16, obtained from plants. 2. this class or any of its oxygenated derivatives, any hydrocarbon from… … Universalium

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