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square number

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WordReference Random House Unabridged Dictionary of American English © 2026

square′ num′ber,

Mathematicsa number that is the square of another integer, as 1 of 1, 4 of 2, 9 of 3, etc.

1550–60

Collins Concise English Dictionary © HarperCollins Publishers::

square number

an integer, such as 1, 4, 9, or 16, that is the square of an integer

Forum discussions with the word(s) "square number" in the title:

Given a real number a,(?) the square a^2 is not negative.
Square a number
There is no <such> rational number r <that the square of r is 3>.

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