- a unit of area measurement equal to a square measuring one inch on each side; 6.452 square centimeters. Abbreviation: in2, sq. in.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for square inch
“They would do one square-inch of skin at a time,” she said.Don't Tax My Tan!
June 15, 2010