20 A DICTIONARY OF COLOUR
n Ångström
The unit of measurement of the wavelength of light named after the physicist A
J Ångström (1814-1874) largely replaced by the nanometre.
n anil
The blue dye now called indigo. ‘Anil’ comes from the Sanskrit word ‘nila’ meaning
dark blue which is also the root of the word ‘lilac’.
n aniline
The alcohol and coal-tar base of many different kinds of dyes, in particular, ‘aniline
black’ and Perkin’s mauve which was one of the first synthetic dyes to be
developed; descriptive of dyes and pigments made with aniline. Aniline dyes are
not as fast as the azo dyes which succeeded them. Hence aniline red (1859), aniline
violet (1860) and aniline blue (1862) the manufacture of which kickstarted the
chemical industry and in particular the companies we now know as Bayer, Ciba-
Geigy and BASF.
n aniline leather
Leather which has been dyed with aniline dyestuff rather than by means of
pigment and which, as a result, brings out the natural grain of the leather.
c aniline red
See aniline, fuchsine and magenta.
n anomalscope
Testing equipment used to diagnose the existence of colour-blindness and to
measure its severity.
n anotta, anotto, anatto, anato, anatta, annatto,
arnotto, arnatto, achiote, achote, notty
A natural orange-red dye from Central America; also used as a food additive for
colouring cheese and margarine (annatto E160(b)).
c antelope
The colour of the antelope. Having regard to the fact that there are so many
different varieties of antelope and that they have a wide range of different
colourings and markings this definition is not very helpful! Perhaps referring to
a dusky brown beige or a pale bronze gold colour.