: a number that can be expressed as an integer or the quotient of an integer divided by a nonzero integer
Example Sentences
Recent Examples on the WebThe polynomial can’t be solved using a rational number — a fraction made by dividing two integers.Quanta Magazine, 21 Apr. 2022 With a rational number—one with an end—the layers of fractions will terminate, or run out, eventually.Popular Mechanics, 21 Feb. 2021 This interminable variety can’t be divided by a rational number. Ephrat Livni, Quartz, 14 Mar. 2020 In other words, an L-function over the set of rational numbers, which is one of the ground-floor functions studied in complex space, ends up being a particular kind of integral complement that can be plotted more easily. Caroline Delbert, Popular Mechanics, 2 Mar. 2020 But rational numbers are actually rare among all numbers.Quanta Magazine, 14 Aug. 2019 But rational numbers are actually rare among all numbers.Quanta Magazine, 14 Aug. 2019 But rational numbers are actually rare among all numbers.Wired, 18 Aug. 2019 The rank is a measurement that tells you something about how many of the solutions to that equation are rational numbers as opposed to irrational numbers.Quanta Magazine, 31 Oct. 2018 See More
Word History
First Known Use
1873, in the meaning defined above
Kids Definition
rational number
noun
: a number that can be expressed as a whole number or the quotient of two whole numbers