English Dictionary: Indigofera tinctoria | by the DICT Development Group |
3 results for Indigofera tinctoria | |
From WordNet (r) 3.0 (2006) [wn]: | |
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From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
2. (Chem.) A blue dyestuff obtained from several plants belonging to very different genera and orders; as, the woad, {Isatis tinctoria}, {Indigofera tinctoria}, {I. Anil}, {Nereum tinctorium}, etc. It is a dark blue earthy substance, tasteless and odorless, with a copper-violet luster when rubbed. Indigo does not exist in the plants as such, but is obtained by decomposition of the glycoside indican. Note: Commercial indigo contains the essential coloring principle indigo blue or indigotine, with several other dyes; as, indigo red, indigo brown, etc., and various impurities. Indigo is insoluble in ordinary reagents, with the exception of strong sulphuric acid. {Chinese indigo} (Bot.), {Isatis indigotica}, a kind of woad. {Wild indigo} (Bot.), the American herb {Baptisia tinctoria} which yields a poor quality of indigo, as do several other species of the same genus. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
d8Indigofera \[d8]In`di*gof"e*ra\, n. [NL., from E. indigo + L. ferre to bear.] (Bot.) A genus of leguminous plants having many species, mostly in tropical countries, several of them yielding indigo, esp. {Indigofera tinctoria}, and {I. Anil}. |