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Hasil cari dari kata atau frase: Nereum tinctorium (0.01051 detik)
Found 1 items, similar to Nereum tinctorium.
English → English
Definition: Nereum tinctorium
, n.; pl. Indigoes
. [F. indigo, Sp. indigo,
indico, L. indicum indigo, fr. Indicus Indian. See Indian
1. A kind of deep blue, one of the seven prismatic colors.
2. (Chem.) A blue dyestuff obtained from several plants
belonging to very different genera and orders, such as,
the woad, Isatis tinctoria
, Indigofera tinctoria
), Indigofera Anil
, Nereum tinctorium
Ait. (family Polygonaceae
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
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.
(Bot.), Isatis indigotica
, a kind of woad.
(Bot.), the American herb Baptisia tinctoria
which yields a poor quality of indigo, as do several other
species of the same genus.