fire red
noun
1
2
or less commonly fire red toner
: a brilliant orange-red azo dye that has good resistance to light and heat, is made from diazotized 2-chloro-4-nitroaniline, and is used as a pigment for paint and for lithographic and offset inks; chlorinated para red
called also Permanent Red R
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Merriam-Webster unabridged
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