The striking of one body against another; collision.

The force or energy of a collision of two objects.

“The hatchet cut the wood on impact.”

A forced impinging.

“His spine had an impingement; L4 and L5 made impact, which caused numbness in his leg.”

To collide or strike, the act of impinging.

“When the hammer impacts the nail, it bends.”

To compress; to compact; to press into something or pack together.

“The footprints of birds do not impact the soil in the way those of dinosaurs do.”

To influence; to affect; to have an impact on.

“I can make the changes, but it will impact the schedule.”