Source : Webster's Revised Unabridged Dictionary (1913)

Interception \In`ter*cep"tion\, n. [L. interceptio a taking
   away: cf. F. interception.]
   The act of intercepting; as, interception of a letter;
   interception of the enemy.

Source : WordNet®

interception
     n 1: the act of intercepting; preventing something from
          proceeding or arriving; "he resorted to the interception
          of his daughter's letters"; "he claimed that the
          interception of one missile by another would be
          impossible"
     2: (American football) the act of catching a football by a
        player on the opposing team