Dictionary
methyl orange
noun
Definition of METHYL ORANGE
: an alkaline dye used as a chemical indicator
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First Known Use of METHYL ORANGE
1881
Medical Dictionary
methyl orange
noun
Medical Definition of METHYL ORANGE
: a basic azo dye C14H14N3NaO3S that is used chiefly as an acid-base indicator and whose dilute solution is yellow when neutral and pink when acid
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