A univalent hydrocarbon radical, CH3-, not existing alone but regarded as an essential residue of methane, and appearing as a component part of many derivatives; as, methyl alcohol, methyl ether, methyl amine, etc.

The univalent hydrocarbon radical CH3 present in many compounds.

(-CH3) A group -CH3, derived from methane. For example, CH3Cl is "methyl chloride" (systematic name: chloromethane); CH3OH is "methyl alcohol" (systematic name: methanol).

green: C25H30N3Cl, a triphyenylmethane dye and acid-base indicator that changes from yellow through blue-green to colorless as the pH is raised ... orange: sodium -dimethylaminobenzenesulfonate, C14H14O3N3SNa, an acid-base indicator that changes from red to yellow as the pH is raised through 3.8 ... red: -dimethylaminoazobenzenecarboxylic acid, C15H15O2N3, an acid-base indicator that changes from yellow to reddish purple as the pH is raised through 4.5