Read Edit View history 啶 dìng phonetic used in pyridine and pyrimidine Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 啶 · dìng · idine 2026/03/04 啶 dìng idine idine (chemistry) 吡啶是化学中常用的溶剂。 created sense Mar 4, 2026, 02:25 AM