appulse /ə-pulsˈ/

1. A striking against something
2. (of two celestial objects) an apparent coming to conjunction or to the meridian as perceived by an observer (astronomy)
3. Specif the close approach of a planet or asteroid to a star without the occurrence of an eclipse

• boults
• boun
• bounce
• bounce back
• bounced
• bouncer
• bouncers
• bounces
• bouncier
• bounciest
• bouncily
• bounciness
• bouncinesses
• bouncing
• bouncy
• bouncy castle
• bouncy castles
• bound
• boundaries
• boundary
• boundary condition
• boundary conditions
• boundary layer
• boundary-layer control
• boundary layers