methyl orange


: an alkaline dye used as a chemical indicator

Word History

First Known Use

1881, in the meaning defined above

Time Traveler
The first known use of methyl orange was in 1881

Dictionary Entries Near methyl orange

Cite this Entry

“Methyl orange.” Dictionary, Merriam-Webster, Accessed 13 Jun. 2024.

Kids Definition

methyl orange

: an alkaline liquid mixture used as a dye to indicate the presence of acid

Medical Definition

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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