A violet-blue or purple colouring matter, obtained from the plant Crozophora tinctoria (see 2a), formerly much used for colouring jellies…

A purple or red dye-stuff obtained from certain lichens growing on rocks in Scotland and the north of England; = cudbear, n.

A kind of purple or red dye-stuff, obtained from various lichens.

A red or violet dye prepared from certain lichens, esp. Roccella tinctoria. Cf. archil, n.

A purple dye or pigment; spec. (also Tyrian purple) a crimson dye obtained from the hypobranchial gland of various gastropod molluscs found in the…

A kind of red or purple cosmetic paint or paste applied to the lips and cheeks; = purpurissum, n.

A name given to various species of lichens, also called Orchil and Orchilla-weed (Roccella tinctoria, etc.), which yield a violet dye, and the…

Apparently: the name of a purple or violet pigment.

A red or violet dye; = orchil, n. 1. Now historical.

A purple or violet powder, used for dyeing, prepared from various species of lichens, esp. Lecanora tartarea.

a lake (pigment) of a purple colour, formerly made from the cochineal insect, Dactylopius coccus.

Any of various dyes or pigments used to produce one of these colours; esp. those extracted from certain molluscs of the family Muricidae (also…

Any of a range of light shades of purple between lilac and violet; spec. the colour of the aniline dye (see sense A. 2).

A colouring matter produced by the action of nitrosulphuric acid on phenol; indigo-carmine. Obsolete.

a bright red-purple colour.

purple obtained from indigo by the action of fused sodium sulphate.

A bright but delicate purple aniline dye, one of the earliest synthetic dyes. Cf. Perkin's mauve n. at Perkin, n.3 1. Now historical.

the dye mauve, first prepared by Perkin in 1856 and the first synthetic dye to be used commercially. Cf. mauveine, n.

A violet-blue colouring matter or colour. Also attributive.

A purple aniline dye; = mauve, n. 2. Also: the basic substance of which the dye is a salt.

a splendid purple pigment: see quot.

A variety of aniline-violet.

In the names of colours and various materials and preparations, esp. pigments and dyes, having a… = methyl violet n. at methyl, n. compounds 3. Now…

Used attributively and in the possessive to designate dyestuffs discovered and chemical apparatus… any of several basic dyes that are salts of ethyl…

any of a group of methylated rosaniline dyes that vary in colour from bluish to reddish violet depending on their degree of methylation; cf. gentian v…

A purple colouring matter extracted from glands of molluscs of the genus Purpura and later identified as a bromine derivative of indigo.

a synthetic violet dye used as a stain in microscopy and as an antiseptic in the treatment of skin infections.

a mordant acid-dye.

= manganese violet n. at manganese, n. compounds 2; (also in later use) a violet variety of ultramarine blue (see ultramarine, adj. 3a).

A proprietary name for: a pigment belonging to either of two groups having exceptional fastness; (a) blue and green pigments that are derivatives of…

= manganese violet n.