Impact (novel) definition

(1) Influencing strongly

"They resented the impingement of American values on European culture"

(2) The violent interaction of individuals or groups entering into combat

"The armies met in the shock of battle"

(3) The striking of one body against another

(4) A forceful consequence; a strong effect

"The book had an important impact on my thinking"

"The book packs a wallop"

(5) Have an effect upon

"Will the new rules affect me?"

(6) Press or wedge together; pack together