methyl orange

noun

Definition of methyl orange

  1. :  an alkaline dye used as a chemical indicator

1881

First Known Use of methyl orange

1881


Medical Dictionary

methyl orange

noun

Medical Definition of methyl orange

  1. :  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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