The action or process of strengthening or supporting something, especially with additional personnel or material. The army called for reinforcement to bolster their defenses against the advancing enemy.
A stimulus or event that increases the likelihood of the recurrence of a behavior in psychology. Positive reinforcement, such as praise or rewards, can encourage children to complete their homework.
Additional troops or equipment sent to support a military action. The arrival of reinforcements turned the tide of the battle in their favor.
A material, device, or structural element that is used to reinforce or strengthen something, especially in construction or engineering. Steel reinforcement is embedded in the concrete to improve its tensile strength.