Isatis tinctoria

Isatis tinctoria
Indigo In"di*go, n.; pl. {Indigoes}. [F. indigo, Sp. indigo, indico, L. indicum indigo, fr. Indicus Indian. See {Indian}.] [1913 Webster] 1. A kind of deep blue, one of the seven prismatic colors. [1913 Webster]

2. (Chem.) A blue dyestuff obtained from several plants belonging to very different genera and orders, such as, the woad, {Isatis tinctoria} (family {Cruciferae}), {Indigofera suffroticosa}, {Indigofera tinctoria} (family {Leguminosae}), {Indigofera Anil}, {Nereum tinctorium}, {Polygonum tinctorium} Ait. (family {Polygonaceae}), etc.; called also {natural indigo}. 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}. [1913 Webster]

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. [1913 Webster]

{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. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • 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. [1913 Webster] …   The Collaborative International Dictionary of English

  • Isatis tinctoria — Woad redirects here. For the American radio station, see WOAD (AM). For Woads as a fictional name for a tribe[1], see Picts. Isatis tinctoria Woad Woad flowers …   Wikipedia

  • Isatis tinctoria —   Isatide Isatis tinctoria Flores de I …   Wikipedia Español

  • Isatis tinctoria — Färberwaid Färberwaid (Isatis tinctoria) Systematik Klasse: Dreifurchenpollen Zweikeimblättrige (Rosopsida) …   Deutsch Wikipedia

  • Isatis tinctoria — Pastel des teinturiers Pastel des teinturiers …   Wikipédia en Français

  • 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}.] [1913 Webster] 1. (Bot.) An herbaceous cruciferous plant ({Isatis tinctoria}) of the family… …   The Collaborative International Dictionary of English

  • 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}.] [1913 Webster] 1. (Bot.) An herbaceous cruciferous plant ({Isatis tinctoria}) of the family… …   The Collaborative International Dictionary of English

  • Isatis tinctoria — dažinė mėlžolė statusas T sritis vardynas apibrėžtis Bastutinių šeimos dažinis, rauginis, vaistinis augalas (Isatis tinctoria), paplitęs Europoje, Azijoje ir Afrikoje. atitikmenys: lot. Isatis tinctoria angl. dyer s woad; woad vok. Färberwaid… …   Lithuanian dictionary (lietuvių žodynas)

  • Isatis Tinctoria — Indican In di*can, n. [See {Indigo}.] [1913 Webster] 1. (Chem.) A glucoside ({C14H17NO6}) obtained from woad (indigo plant, {Isatis Tinctoria}) and other plants (see {indigo}), as a yellow or light brown sirup. When purified it is obtained as… …   The Collaborative International Dictionary of English

  • 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. [1913 Webster] 2. (Bot.) A plant… …   The Collaborative International Dictionary of English

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”