Source : Webster's Revised Unabridged Dictionary (1913)

Imido \Im"i*do\, a. (Chem.)
   Pertaining to, containing, or combined with, the radical NH,
   which is called the imido group.

   {Imido acid}, an organic acid, consisting of one or more acid
      radicals so united with the imido group that it contains
      replaceable acid hydrogen, and plays the part of an acid;
      as, uric acid, succinimide, etc., are imido acids.