Imido \Im"i*do\, a. (Chem.) Pertaining to, containing, or combined with, the radical NH, which is called the imido group. [1913 Webster] {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. [1913 Webster]