152 A DICTIONARY OF COLOUR
vb envermil; to
To make red.
n eosin, eosine
A red dye made from coal-tar used in the cosmetic industry, for dying silk and
as a biological stain. From the Greek eos, the dawn, in reference to the colour
of the sky when the new day dawns.
n epigamic colours
The colours displayed by animals during and as part of the process of courtship.
The male South Australian cuttlefish can take on the colouring of a female cuttlefish
to enable it to mate by stealth with a rival’s sexual partner. Once it pounces it
reveals the black and white stripes of the male. Researchers at Naples University
have found that when a telephone is positioned near to squid, the squid change
colour. 19th century naturalists believed that almost all animal colour patterns
developed for the purpose of camouflage. However, it is clear that many animals
(particularly fish) change their body colour for a variety of other purposes including
to locate members of the same species (see episematic), to frighten off the enemy
and courtship as referred to above. Slow colour change is often effected by means
of hormones whereas more rapid change is effected by the nervous system (as
in the case of human blushing). See also camouflage.
c epinard
The dark green colour of the vegetable, spinach – épinard being the French for
spinach. There are many other French words which take on a close resemblance
to the English equivalent word once the initial ‘é‘ is replaced by the letter ‘s’ –
for example, école, écriture, épellation, épice, éponge, état, étage and étranger.
a epipolic
Fluorescent (optics).
a episematic
Referring to the natural colouring of animals which helps them to locate members
of the same species (see aposematic).
a erne-coloured
Having the colour of an eagle. Also ‘eagle hued’.