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Webster's 1913 Dictionary
TROPAEOLIN
TROPAEOLIN
Tro *pæ "o *
lin,
n. (
Chem.
)
Defn: A
name
given
to
any
one
of
a
series
of
orange-red dyestuffs
produced
artificially
from
certain
complex
sulphonic
acid
derivatives
of
azo
and
diazo
hydrocarbons
of
the
aromatic
series;
--
so
called
because
of
the
general
resemblance
to
the
shades
of
nasturtium
(Tropæolum ).
The Wordsmith Dictionary
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