英语词汇“terpene”的英英意思、用法、释义、翻译、读音、例句、短语、词组、英语词典-本地帮

单词

terpene

释义

terpene Chem.|ˈtɜːpiːn|
[f. terp- in terp-entin, obs. f. turpentine, with suffix -ene, used in forming the names of hydrocarbons related to benzene. Formerly called terebene.]
A general name of hydrocarbons having the formula C₁₀H₁₆, many of which occur in the volatile oils of plants, chiefly of the coniferous and aurantiaceous orders. The commonest is pinene, the chief constituent of turpentine-oil.
Sometimes used to include hydrocarbons of formula C₅H₈, and its polymers C₁₀H₁₆, C₁₅H₂₄, C₂₀H₃₂, etc.
[1866Kekulé Lehrb. Organ. Chemie II. 437.]1873Watts Fownes' Chem. (ed. 11) 778 Terpenes are volatile oils, existing in plants.1885I. Remsen Org. Chem. (1888) 311 Artificial camphor..when heated alone, or with bases,..gives off hydrochloric acid, and a terpene different from the oil of turpentine is formed.1902Pond tr. Heusler's Chem. Terpenes 17 Those hydrocarbons which have the empirical constitution C₅H₈ are termed terpenes. Four main classes are recognised: Hemiterpenes, C₅H₈, Terpenes proper, C₁₀H₁₆, Sesquiterpenes, C₁₅H₂₄, Polyterpenes, (C₅H₈)x.
Hence ˈterpeneless a., rendered free of terpenes; terpeˈnylic [f. terpene + -yl + -ic], in terpenylic acid, a white crystalline compound, C₈H₁₂O₄, obtained by oxidizing a terpene, as turpentine-oil, with chromic acid.
1881Watts Dict. Chem. VIII. 1907 Terpenylic acid..is obtained at first in the form of a syrup resembling glycerol... Terpenylic acid is monobasic.1921Jrnl. R. Naval Med. Service VII. 89 Terpeneless and sesquiterpeneless oils.1972Materials & Technol. V. i. 17 ‘Terpeneless bergamot oil’ is used in high-class perfumes.

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