| 单词 | colophony |
| 释义 | colophony (once / 381269 pages) n WORD FAMILY colophony USAGE EXAMPLESOrdinary resin, or colophony, consists chiefly of a monobasic acid having the empirical formula C20H30O2, known as sylvinic acid, whose exact structure is not known. Thatcher, Roscoe Wilfred, The Chemistry of Plant Life(2010) A mixture of colophony, black pitch, and tar. Belcher, Edward, Sir, The Sailor's Word-Book—An Alphabet...(2010) Copal, mastic, guaiacum, and colophony or pine resin, are some of them. Project Gutenberg, The Gutenberg Webster's Unabridged...(2010) n translucent brittle substance produced from pine oleoresin; used especially in varnishes and inks and on the bows of stringed instruments Hyper natural resin a plant exudate |
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