To write or print something such as a name or address above, outside, or on the surface of something else.

A superscript is a number, figure, or symbol that appears above the normal line of type, at the right or left of another symbol or text.

Superscripts are often used, with various meanings, in formulas, mathematical expressions, or descriptions of chemical compounds and isotopes.

Superscripts can also be used to indicate the presence of a footnote in a document. Some people even submit ordinal endings for numbers which are written as superscripts; such as, 1^st, 2^nd, 3^rd, 4^th, etc.; instead of, 1st, 2nd, 3rd, 4th.