square inch

unit for measuring area, area of a square which has the length of each side equal to one inch

A square inch (plural: square inches) is a unit of area, equal to the area of a square with sides of one inch. The following symbols are used to denote square inches:square insq inches, sq inch, sq ininches/-2, inch/-2, in/-2inches^2, inch^2, in^2inches², inch², in²The square inch is a common unit of measurement in the United States and the United Kingdom.
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Noun
1. a unit of area equal to one inch by one inch square
(synonym) sq in
(hypernym) area unit, square measure