in·frac·tion \ə̇nˈfrakshən\noun (-s) Etymology: Latin infraction-, infractio, from infractus (past participle of infringere) + -ion-, -io -ion 1.: the act of breaking or violating : breach, violation, infringement < infraction of a treaty > < minor infractions of the rules > < infraction of code > < infraction of discipline > 2.: an incomplete fracture without displacement of the bone Synonyms:see breach