The top rating awarded to qualifying corporate bonds by the bond rating agencies such as Standard & Poor's (AAA) and Moody's (Aaa). These ratings mean: (1) the bonds are of the highest quality (are 'gilt edged'), (2) carry the least degree of investment risk, and (3) are fully expected to pay both interest and principal on time. Other rating agencies use different designations. See also bond ratings.
Use AAA in a sentence