What does limited atonement mean in Reformed theology?

Limited atonement is one of the five points of Calvinism, asserting that Christ's atoning death was intended specifically for the elect rather than universally for all humanity. This doctrine is supported by scriptures like Romans 8:30, which states, 'Moreover whom He predestined, these He also called; whom He called, these He also justified; and whom He justified, these He also glorified.' This indicates that the atonement effectively secures salvation for those whom God has chosen, affirming the belief that not all will be saved, and maintaining that Christ's death was purposeful and effective in bringing about the redemption of His people.