toluidine(redirected from Ortho-tolidine)
Also found in: Medical, Encyclopedia.
Any of three isomeric compounds, C7H9N, used to make dyes.
(Elements & Compounds) an amine derived from toluene existing in three isomeric forms; aminotoluene. The ortho- and meta- isomers are liquids and the para- isomer is a crystalline solid. All three are used in making dyes. Formula: C6H4CH3NH2
[C19: from tolu(ene) + -ide + -ine2]
to•lu•i•dine(təˈlu ɪˌdin, -dɪn)
any of three isomeric amines having the formula C7H9N, derived from toluene: used in the manufacture of dyes and drugs.