Definition of Ofera. Meaning of Ofera. Synonyms of Ofera
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Definition of Ofera
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Indigofera Indigofera 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.
Indigofera anil Anil An"il, n. [F. anil, Sp. an[=i]l, or Pg. anil; all fr. Ar.
an-n[=i]l, for al-n[=i]l the indigo plant, fr. Skr. n[=i]la
dark blue, n[=i]l[=i] indigo, indigo plant. Cf. Lilac.]
(Bot.)
A West Indian plant (Indigofera anil), one of the original
sources of indigo; also, the indigo dye.
Indigofera 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.
Indigofera tinctoria Indigofera 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.
