The Collaborative International Dictionary of English v.0.48:

Detect \De*tect"\ (d[-e]*t[e^]kt"), v. t. [imp. & p. p.
   Detected; p. pr. & vb. n. Detecting.]
   1. To uncover; to discover; to find out; to bring to light;
      as, to detect a crime or a criminal; to detect a mistake
      in an account.
      [1913 Webster]

            Plain good intention . . . is as easily discovered
            at the first view, as fraud is surely detected at
            last.                                 --Burke.
      [1913 Webster]

            Like following life through creatures you dissect,
            You lose it in the moment you detect. --Pope.
      [1913 Webster]

   2. To inform against; to accuse. [Obs.]
      [1913 Webster]

            He was untruly judged to have preached such articles
            as he was detected of.                --Sir T. More.

   Syn: To discover; find out; lay bare; expose. Detectable

WordNet (r) 3.0 (2006):

detecting
    n 1: a police investigation to determine the perpetrator;
         "detection is hard on the feet" [syn: detection,
         detecting, detective work, sleuthing]