Method Definition 1. system, orderliness 2. way of doing sth 3. An established, habitual, logical, or prescribed practice or systematicprocess of achieving certain ends with accuracy and efficiency, usually in an ordered sequence of fixed steps. See also scientific method and procedureMethod Definition 1.system,orderliness 2.way of doing sth. 3.An established, habitual, logical, or prescribed practice or systematicprocess of achieving certain ends with accuracy and efficiency, usually in an ordered sequence of fixed steps. See also scientific method and procedure