/ Thesaurus / S Synonyms of square inch Find synonyms for: Noun1. square inch, sq in, area unit, square measureusage: a unit of area equal to one inch by one inch squareWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language