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Wiktionary
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cyanide process
English
Noun
cyanide
process
(
plural
cyanide processes
)
A
method
of
extracting
gold
and
silver
from their
ores
with a
solution
of
sodium
cyanide
A
process
of
case-hardening
iron
or
steel
by
immersing
it in
molten
cyanide
and then
quenching
in water or oil
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