单词 | nigrosine |
释义 | Word Frequency nigrosine(ˈnɪɡrəˌsiːn, -sɪn) or nigrosin (ˈnɪɡrəsɪn) noun any of a class of black pigments and dyes obtained from aniline: used in inks and shoe polishes and for dyeing textiles Word origin C19: from Latin niger black + -ose1 + -ine1 |
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