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Pronunciation varies by accent · noun
(organic chemistry, obsolete) Polishing rouge; a reddish-brown oxide of iron, used in polishing glass, and also as a pigment..
Use colcothar when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Colcothar means (organic chemistry, obsolete) Polishing rouge; a reddish-brown oxide of iron, used in polishing glass, and also as a pigment..
Common synonyms include crocus Martis.
The opposite depends on the specific sense.
Use colcothar where its definition matches the intended context.
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