di·gres·sion /-ˈgrɛʃən/
 離題,扯到枝節上,脫軌


 Di·gres·sion n.
 1. The act of digressing or deviating, esp. from the main subject of a discourse; hence, a part of a discourse deviating from its main design or subject.
    The digressions I can not excuse otherwise, than by the confidence that no man will read them.   --Sir W. Temple.
 2. A turning aside from the right path; transgression; offense. [R.]
 Then my digression is so vile, so base,
 That it will live engraven in my face.   --Shak.
 3. Anat. The elongation, or angular distance from the sun; -- said chiefly of the inferior planets. [R.]

 ◄ ►


 digression
      n 1: a message that departs from the main subject [syn: aside,
           excursus, divagation, parenthesis]
      2: a turning aside (of your course or attention or concern); "a
         diversion from the main highway"; "a digression into
         irrelevant details"; "a deflection from his goal" [syn: diversion,
          deviation, deflection, deflexion, divagation]
      3: wandering from the main path of a journey [syn: excursion]