Full retirement age, or FRA, is the point at which you qualify for 100 percent of the benefit Social Security calculates from your lifetime earnings. At full retirement age — which is 66 and 6 months for those born in 1957, two months later for those born in 1958, and is gradually rising to 67 over the next several years — your SSDI payment ... More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.