Definition of pyridine in English:



mass nounChemistry
  • A colourless volatile liquid with an unpleasant odour, present in coal tar and used chiefly as a solvent.

    A heteroaromatic compound; chemical formula: C₅H₅N

    • ‘Plant IDHs differ in the pyridine nucleotide they use as co-substrate and also in their localization in the cell.’
    • ‘This is a pyridine silver method described by Ranson in 1911 for impregnating unmyelinated nerve fibers.’
    • ‘The structure of niacinamide consists of a pyridine ring with an amide group in position three.’
    • ‘The heme b content was quantified by the pyridine hemochrome method.’
    • ‘The folic acid pathway provides the essential precursor molecule, pyridine thymidylate, needed in DNA biosynthesis.’


Mid 19th century: from Greek pur ‘fire’ + -ide + -ine.