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单词 alizarin
释义 alizarin
 /euh liz"euhr in/, n. Chem.
 a solid appearing reddish-orange as crystals and brownish-yellow as powder, C14H8O4, one of the earliest known dyes, formerly obtained in its natural state from madder and now derived from anthraquinone: used chiefly in the synthesis of other dyes.
 Also, alizarine /euh liz"euhr in, -euh reen'/.
 [1825-35; < F alizarine, equiv. to alizar(i) ( < Sp < Ar al the + 'asarah juice) + -ine -INE1]
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更新时间:2024/12/23 19:06:40