Found 2 items, similar to methyl orange.
English → English (WordNet) Definition: methyl orange methyl orange n : an azo dye used as an acid-base indicator; used for titrations involving weak bases
English → English (gcide) Definition: methyl orange Helianthin \He`li*an"thin\, n. [Prob. fr. L. helianthes, or NL. helianthus, sunflower, in allusion to its color.] (Chem.) An artificial, orange dyestuff, analogous to tropaolin, and like it used as an indicator in alkalimetry; -- called also methyl orange. [1913 Webster]