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Definition of Square inch
1. Noun. A unit of area equal to one inch by one inch square. 
Definition of Square inch
1. Noun. A unit of area equal to the area of a square the sides of which are each one inch long. ¹
¹ Source: wiktionary.com
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1. Noun. A unit of area equal to one inch by one inch square. 
1. Noun. A unit of area equal to the area of a square the sides of which are each one inch long. ¹
¹ Source: wiktionary.com