Definition of Isatis tinctoria. Meaning of Isatis tinctoria. Synonyms of Isatis tinctoria

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Definition of Isatis tinctoria

Isatis tinctoria
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.
Isatis tinctoria
Isatis I"sa*tis (?; 277), n. [L., a kind of plant, Gr. ? woad.] (Bot.) A genus of herbs, some species of which, especially the Isatis tinctoria, yield a blue dye similar to indigo; woad.
Isatis tinctoria
Woad Woad, n. [OE. wod, AS. w[=a]d; akin to D. weede, G. waid, OHG. weit, Dan. vaid, veid, Sw. veide, L. vitrum.] [Written also wad, and wade.] 1. (Bot.) An herbaceous cruciferous plant (Isatis tinctoria). It was formerly cultivated for the blue coloring matter derived from its leaves. 2. A blue dyestuff, or coloring matter, consisting of the powdered and fermented leaves of the Isatis tinctoria. It is now superseded by indigo, but is somewhat used with indigo as a ferment in dyeing. Their bodies . . . painted with woad in sundry figures. --Milton. Wild woad (Bot.), the weld (Reseda luteola). See Weld. Woad mill, a mill grinding and preparing woad.
Isatis tinctoria
Pastel Pas"tel, n. [F.; cf. It. pastello. Cf. Pastil.] 1. A crayon made of a paste composed of a color ground with gum water. [Sometimes incorrectly written pastil.] ``Charming heads in pastel.' --W. Black. 2. (Bot.) A plant affording a blue dye; the woad (Isatis tinctoria); also, the dye itself.

Meaning of Isatis tinctoria from wikipedia

- Isatis tinctoria, also called woad (/ˈwoʊd/), dyer's woad, or glastum, is a flowering plant in the family Br****icaceae. It is occasionally known as Asp...
- Avet. Isatis takhtajanii Avet. Isatis tinctoria L. Isatis tomentella Boiss. & Balansa Isatis trachycarpa Trautv. Isatis turcomanica Korsh. Isatis undulata...
- I. tinctoria may refer to: Indigofera tinctoria, the true indigo, a plant species Isatis tinctoria, the woad, a flowering plant species Tinctoria This...
- Middle Ages. The dyers of Lincoln, known for colouring wool with woad (Isatis tinctoria) to give it a strong blue shade, created the eponymous Lincoln green...
- in the ancient and medieval world. Plant-based dyes such as woad (Isatis tinctoria), indigo, saffron, and madder were raised commercially and were important...
- important species was Indigofera arrecta, Natal indigo. In Europe, Isatis tinctoria, commonly known as woad, was used for dyeing fabrics blue, containing...
- Woad may refer to: Isatis tinctoria, a flowering plant also known as glastum. National Anthem of the Ancient Britons, also known as Woad, a humorous song...
- providing the largest volume of vegetable oils of any species. Woad (Isatis tinctoria) was used in the past to produce a blue textile dye (indigo), but has...
- bright yellow dye. The yellow could be mixed with the blue from woad (Isatis tinctoria) to produce greens such as Lincoln green. The dye was in use by the...
- was copied after a design made for Catherine the Great. In Europe, Isatis tinctoria, or woad, had been the main source of indigo dye, and the most readily-available...