from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of three isomeric univalent radicals, C5H4N-, derived from pyridine; analogous to phenyl.

from the GNU version of the Collaborative International Dictionary of English

  • n. A hypothetical radical, C5H4N, regarded as the essential residue of pyridine, and analogous to phenyl.

from The Century Dictionary and Cyclopedia

  • n. The radical C5H4N, which is derived from pyridine.


Sorry, no etymologies found.


  • This compound has the chemical name methyl alpha-5 (4,5,6,7-tetrahydro (3,2-c) thieno pyridyl) (2-chlorophenyl) - acetate, with the acronym MATTPCA.

    Patent Baristas

  • These coordination complexes with pendant sugar groups lining their interiors-assembled from 12 metal ions and 24 bis-pyridyl ligands containing glucose substituents-acted as structurally well-defined templates for the sol-gel condensation of alkoxysilanes.

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