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# perfect square

noun, Mathematics.
1.
a rational number that is equal to the square of another rational number.
2.
a polynomial that is the square of another polynomial.
Origin of perfect square
1935-1940
First recorded in 1935-40
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for perfect square
Historical Examples
• Each terrace forms a perfect square, the sides of the first measuring each 30 metres in length.

• It is nearly a perfect square in shape, and each side of the square is a little over six miles long.

Ella M. Sexton
• The curiously-shaped cross may be cut into four pieces that will fit together and form a perfect square.

Henry Ernest Dudeney
• Nine of the sections formed a perfect square, each of the four sides being three miles in length.

Milan C. Edson
• Knit back and forth until you have a perfect square of white, then join the color.

• The Grivitza redoubt, which was one of the largest, was a perfect square, each side of which was about fifty yards in length.

Charles S. Ryan
• The house is a perfect square, turned to the four cardinal points.

Gustave Aimard
• Thus the surface covered by the nave and aisles is almost a perfect square.

Ernest Gilliat-Smith
• The poles were set in a perfect square, having sides about 18 in.

Various
• It formed, he says, a perfect square in which each side measured four stades, a little over 800 yds.

F. Haverfield

### Difficulty index for perfect square

Few English speakers likely know this word

### Word Value for perfect

14
16
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