Abstract
Since the first legal definition of the crime of terrorism in Colombia –which took place in the Penal Code of 1980–, the concept attended a first vagueness of normative language, where, in the words of criminal legislature, the properties of a factual assumption were described dangerousness. This semantic vagueness has created a kind of lack of precise boundaries in determining this particular standard form so consequently the legal interpretation implies an expansionary opening of criminal law. In response to this decantation, for the legislature in its field of competence, shed the necessary clarity and certainty about the actions that are normatively instituted a criminal offense