| 释义 |
Definition of terpene in English: terpenenoun ˈtəːpiːnˈtərpin Chemistry Any of a large group of volatile unsaturated hydrocarbons found in the essential oils of plants, especially conifers and citrus trees. They are based on a cyclic molecule having the formula C₁₀H₁₆. Example sentencesExamples - Essential oils contain many terpenes, which are rapidly absorbed through the lungs and cross the blood-brain barrier.
- Lactones, phenolic aldehydes (such as vanillin), terpenes (essential oils) and wood tannins are all by-products of oak, so it is understandable that too much can rob a white wine of its fruit and delicacy.
- It is the terpenes that give the resins of conifers their characteristic smells.
- In woody plants, carbon-based chemical compounds such as phenolics and terpenes comprise the main chemical defence.
- Air fresheners, for example, often contain limonene - a terpene added to many household products to improve fragrance.
Origin Late 19th century: from German Terpentin 'turpentine' + -ene. Definition of terpene in US English: terpenenounˈtərpinˈtərpēn Chemistry Any of a large group of volatile unsaturated hydrocarbons found in the essential oils of plants, especially conifers and citrus trees. They are based on a cyclic molecule having the formula C₁₀H₁₆. Example sentencesExamples - Lactones, phenolic aldehydes (such as vanillin), terpenes (essential oils) and wood tannins are all by-products of oak, so it is understandable that too much can rob a white wine of its fruit and delicacy.
- In woody plants, carbon-based chemical compounds such as phenolics and terpenes comprise the main chemical defence.
- Essential oils contain many terpenes, which are rapidly absorbed through the lungs and cross the blood-brain barrier.
- Air fresheners, for example, often contain limonene - a terpene added to many household products to improve fragrance.
- It is the terpenes that give the resins of conifers their characteristic smells.
Origin Late 19th century: from German Terpentin ‘turpentine’ + -ene. |