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Word History
First Known Use
1881, in the meaning defined above
Dictionary Entries Near methyl orange
Cite this Entry
“Methyl orange.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/methyl%20orange. Accessed 25 Dec. 2024.
Kids Definition
methyl orange
noun
: an alkaline liquid mixture used as a dye to indicate the presence of acid
Medical Definition
methyl orange
noun
: 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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