noun
a unit of area equal to one inch by one inch square
• Syn: ↑sq in
• Hypernyms: ↑area unit, ↑square measure
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noun : a unit of area equal to a square one inch long on each side — see measure table
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a unit of area measurement equal to a square measuring one inch on each side; 6.452 square centimeters. Abbr.: in2, sq. in.
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square inch,
a unit of square measure, equal to an area 1 inch by 1 inch or 6.4516 square centimeters: »
A jet plane traveling 1,500 mph hits the rain drops with a force of 70,000 pounds per square inch (Newsweek).
Useful english dictionary. 2012.