the action or process of reinforcing or strengthening:older electricity mains required reinforcement to meet increased demand
the process of encouraging or establishing a belief or pattern of behaviour:positive feedback leads to reinforcement
(reinforcements) extra personnel sent to increase the strength of an army or similar force:a small force would hold the position until reinforcements could be sent
the strengthening structure or material employed in reinforced concrete or plastic:glass-fibre reinforcement [count noun]:reinforcements set in the concrete
reinforcement in other Oxford dictionaries
Definition of reinforcement in the US English dictionary