| thionol | <chemistry> A red or violet dyestuff having a greenish metallic luster. It is produced artificially, by the chemical dehydration of thionine, as a brown amorphous powder. Origin: Thionine + -ol. Source: Websters Dictionary (01 Mar 1998) |
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| thionoline | <chemistry> A beautiful fluorescent crystalline substance, intermediate in composition between thionol and thionine. Source: Websters Dictionary (01 Mar 1998) |