pyridinePronunciation: /ˈpɪrɪdiːn/Definition of pyridine noun [mass noun] Chemistry a colourless volatile liquid with an unpleasant odour, present in coal tar and used chiefly as a solvent. A heteroaromatic compound; chemical formula: C5H5N Origin: mid 19th century: from Greek pur 'fire' + -ide + -ine4pyridine in other Oxford dictionaries Definition of pyridine in the US English dictionary
