noun Toluidine n. (Chem.) Any one of three metameric amido derivatives of toluene analogous to aniline, and called respectively orthtoluidine, metatoluidine, and paratoluidine; especially, the commonest one, or paratoluidine, which is obtained as a white crystalline substance. Note: It is used in the aniline dye industry, and constitutes the essential nucleus or radical of those dyes.
Collaborative International Dictionary of English 0.48
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