appulse
/əˈpʌls/
noun
- A striking or touching of one thing against another; a collision or impact.
- In physics class, we studied the appulse of particles in a vacuum.
- The appulse of the hammer against the anvil rang through the workshop.
- The appulse of the two cars was loud enough to wake the neighbors.
- The approach or close passage of one celestial body to another, as seen from Earth.
- Astronomers tracked the appulse of the asteroid near Mars.
- The appulse of Venus and Jupiter was visible just after sunset.
- During the appulse, the moon appeared to pass very close to Saturn.