单词 | quercitron |
释义 | quercitronnoun quer·cit·ron ˈkwər-ˌsi-trən ˌkwər-ˈsi- 1 : a large timber oak (Quercus velutina) chiefly of the eastern and central U.S. 2 : the bark of the quercitron that is rich in tannin and a dye containing quercetin also : the dye |
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