Definition of Orpiment
Or´pi`ment
n.
1.
(Chem.)
Arsenic
sesquisulphide
,
produced
artificially
as
an
amorphous
lemon-yellow
powder
,
and
occurring
naturally
as
a
yellow
crystalline
mineral
; -
formerly
called
auripigment
.
It
is
used
in
king
'
s
yellow
,
in
white
Indian
fire
,
and
in
certain
technical
processes
,
as
indigo
printing
.
Our
orpiment
and
sublimed
mercurie
.
- Chaucer.
Red orpiment
realgar
;
the
red
sulphide
of
arsenic
.
Yellow orpiment
king
'
s
yellow
.
Related Words
arsenic
,
As
,
atomic
number
33
,
mineral
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