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square inch

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noun
a unit of area measurement equal to a square measuring one inch on each side; 6.452 square centimeters. Abbreviation: in2, sq. in.
QUIZ
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Test how much you really know about regular and irregular plural nouns with this quiz.
Question 1 of 9
Which of the following nouns has an irregular plural form?
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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