lanzamiento

noun
  1. The act of propelling something with force, typically into the air. noun
    The lanzamiento of the javelin was impressive, reaching a great distance.
    During the festival, the lanzamiento of fireworks lit up the night sky.
  2. The introduction or release of a new product, service, or idea to the public. noun
    The company planned a grand lanzamiento for their new smartphone model.
    The lanzamiento of the new book was celebrated with a signing event.