| 单词 | black catechu |
| 释义 | black catechu (once / 2363863 pages) n WORD FAMILY black catechu USAGE EXAMPLESOrdinary black catechu is usually imported in three different forms. Various, Encyclopaedia Britannica, 11th Edit...(2010) Black catechu is official in most pharmacopoeias except that of Great Britain, in which pale catechu is the official drug. Various, Encyclopaedia Britannica, 11th Edit...(2010) The actions and uses of the two are similar, but black catechu is the more powerful. Various, Encyclopaedia Britannica, 11th Edit...(2010) n extract of the heartwood of Acacia catechu used for dyeing and tanning and preserving fishnets and sails; formerly used medicinally Syn|Hyper catechu extract, infusion a solution obtained by steeping or soaking a substance (usually in water) |
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