Thayer's Greek Lexicon

 1. a going over
2. metaph. a disregarding, violating
  1) of the Mosaic law
  2) the breach of a definite, promulgated, ratified law
  3) to create transgressions, i.e. that sins might take on the
character of transgressions, and thereby the consciousness
of sin be intensified and the desire for redemption be aroused