单词 | benzoin |
释义 | benzoin1[ ben-zoh-in, -zoin, ben-zoh-in ] / ˈbɛn zoʊ ɪn, -zɔɪn, bɛnˈzoʊ ɪn / nounAlso called gum benjamin, gum benzoin . a reddish-brown, aromatic balsamic resin occurring in almondlike fragments and having a vanillalike odor, obtained from trees of the genus Styrax, especially S. benzoin, of Java, Sumatra, etc.: used in the manufacture of perfume and cosmetics and in medicine internally as an expectorant and externally as an antiseptic. Also called benjamin, benjamin-bush . any plant belonging to the genus Lindera (Benzoin), of the laurel family, including the spicebush and similar aromatic plants. Origin of benzoin11550–60; earlier benjoin<Middle French <Portuguese beijoim and Spanish benjuí<Arabic lubān jāwī frankincense of Java (lu- probably constructed as the definite article); z of benzoin<Italian benzoi ≪ Arabic Words nearby benzoinbenzodiazepine, benzofuran, benzoglyoxaline, benzoic, benzoic acid, benzoin, benzol, benzonatate, benzonitrile, benzophenone, benzopyrene Definition for benzoin (2 of 2)benzoin2 [ ben-zoh-in, -zoin, ben-zoh-in ] / ˈbɛn zoʊ ɪn, -zɔɪn, bɛnˈzoʊ ɪn / noun Chemistry.a white, slightly water-soluble powder, C14H12O2, derived by the condensation of benzaldehyde in the presence of potassium cyanide, and used in organic synthesis. Origin of benzoin2benzo- + -in2 Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for benzoinBritish Dictionary definitions for benzoinbenzoin / (ˈbɛnzɔɪn, -zəʊɪn, bɛnˈzəʊɪn) / nounAlso called: benjamin a gum resin containing benzoic acid, obtained from various trees of the genus Styrax, esp S. benzoin of Java and Sumatra, and used in ointments, perfume, etc a white or yellowish crystalline compound with a camphor-like odour used as an antiseptic and flavouring; 2-hydroxy-2-phenylacetophenone. Formula: C 6 H 5 CHOHCOC 6 H 5 any lauraceous aromatic shrub or tree of the genus Lindera, esp L. benzoin (spicebush) Word Origin for benzoinC16: from French benjoin, from Old Catalan benjui, from Arabic lubān jāwī, literally: frankincense of Java Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for benzoinbenzoin [ bĕn′zō-ĭn, -zoin′ ] A resin obtained from the bark of certain tropical Asian trees of the genus Styrax and used in making perfumes and in medicine as an antiseptic. A very toxic white or yellowish crystalline compound derived from benzaldehyde. It oxidizes easily and is used as a reducing agent. Chemical formula: C14H12O2. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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