impinging (noun)

1. In the fantasy novel, the impinging of two magical realms led to a cataclysmic battle.

2. The climactic scene in the movie depicted the impinging of two cars crashing into each other.

3. According to Greek mythology, the impinging of Apollo's sun chariot on Phaeton caused great destruction on Earth.

4. The impinging of Allied and Axis forces in the Battle of Normandy marked a turning point in World War II.