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Definition of Pyridyl
1. n. A hypothetical radical, C5H4N, regarded as the essential residue of pyridine, and analogous to phenyl.
Definition of Pyridyl
1. Noun. (chemistry) Any of three isomeric univalent radicals, C5H4N-, derived from pyridine; analogous to phenyl. ¹
¹ Source: wiktionary.com