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rational number
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rational number

noun

Definition of RATIONAL NUMBER

: a number that can be expressed as an integer or the quotient of an integer divided by a nonzero integer
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First Known Use of RATIONAL NUMBER

1879

rational number

noun    (Concise Encyclopedia)

Any number that can be represented as the quotient of two integers (i.e., the denominator cannot equal zero). The set of rational numbers includes all integers as well as all fractions. In decimal form, rational numbers are either terminating or repeating decimals.

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