benzoin

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ben·zo·in / ˈbenzəwin; ˈbenˌzoin/ • n. 1. (also gum benzoin) a fragrant gum resin obtained from a tropical eastern Asian tree (genus Styrax, family Styracaceae), used in medicines, perfumes, and incense. Also called gum benjamin. 2. Chem. a white crystalline aromatic ketone, C6H5CHOHCOC6H5, present in this resin.

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benzoin (bĕn´zoin, –zōĬn) or benzoinum (bĕnzoin´əm), balsamic resin, the dried exudation from the pierced bark of various species of the benzoin tree (Styrax) native to Sumatra, Java, and Thailand; appearing as red-brown to yellow-brown tears. Because of its fragrant odor it is used in perfume and sometimes in incense. The benzoic acid present in it gives it value in medicine as an antiseptic, as a stimulant, and, in certain respiratory diseases, as an inhalant. Among the several varieties are Siam benzoin and Sumatra benzoin. Siam benzoin is considered finer, since it has a high content of benzoic acid; Sumatra benzoin contains cinnamic acid.

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benzoin resin obtained from tree of genus Styrax XVI; a constituent of this; genus of trees (including Benjamin tree) XIX. ult. (through F., etc.) — Arab. lubān-jāwī ‘frankincense of Java’.
Hence benzoic acid. XVIII.

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benzoin Fragrant, resinous polymer, once obtained from the balsam resin found in the trees of the genus Styrax in tropical se Asia, now made synthetically. It is used in perfumes and decongestant cough linctus.

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benzoin See STYRAX.

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benzoin (ben-zoh-in) n. a fragrant gum resin used as a constituent of friar's balsam.