احد

أُحَادَ ذ [accus. of أُحَادُ] is imperfectly decl., because of its deviation from its original, (S, K,) both in form and in meaning; (S;) [being changed in form from وَاحِدًا, and in meaning from ا@وَاحِدًا: (see ثُلَاثَ:)] you say, جَاؤُوا أُحَادَ أُحَادَ, [احاد being repeated for the purpose of corroboration,] meaning, They came one [ and ] one, one [ and ] one; or one [ by ] one, one [ by ] one. (S, K.) The dim. of أُحَادُ is ↓ أُحَيِّدٌ, perfectly decl., like ثُلَيِّثٌ [q. v.] &c. (S, in art. ثلث.)