1 variability | Definition of variability

variable

adjective
var·​i·​able | \ ˈver-ē-ə-bəl How to pronounce variable (audio) \

Definition of variable

 (Entry 1 of 2)

1a : able or apt to vary : subject to variation or changes variable winds variable costs
2 : characterized by variations
3 : having the characteristics of a variable
4 : not true to type : aberrant used of a biological group or character

variable

noun

Definition of variable (Entry 2 of 2)

1a : a quantity that may assume any one of a set of values
b : a symbol representing a variable
2a : something that is variable
b : a factor in a scientific experiment that may be subject to change

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Other Words from variable

Adjective

variability \ ˌver-​ē-​ə-​ˈbi-​lə-​tē How to pronounce variability (audio) \ noun
variableness \ ˈver-​ē-​ə-​bəl-​nəs How to pronounce variableness (audio) \ noun
variably \ -​blē How to pronounce variably (audio) \ adverb

Examples of variable in a Sentence

Adjective

The winds were light and variable. The loan has a variable interest rate.

Noun

unemployment and other economic variables
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Recent Examples on the Web: Adjective

Virginia has been a leader in using variable rate tolls to manage traffic flow on the Beltway and Interstate 66 during rush hour. Maria Torres, Los Angeles Times, "Anaheim native Jose Rojas won’t be called up by Angels despite impressive season," 3 Sep. 2019 Litvak specializes in operations management, a branch of applied mathematics that uses statistical techniques to efficiently match resources with variable demand. Clayton Dalton, Quartz, "To solve hospital overcrowding, think like a mathematician," 29 Aug. 2019 There is a slight chance of isolated thunderstorms Wenesday evening, when lightning could spark fires and cause breezy, variable wind conditions. Cnn.com Wire Service, The Mercury News, "Thousands of Burning Man fans are in the middle of Nevada desert with a huge fire threat," 28 Aug. 2019 There is a slight chance of isolated thunderstorms Wenesday evening, when lightning could spark fires and cause breezy, variable wind conditions. Alisha Ebrahimji, CNN, "Thousands of Burning Man fans are in the middle of a desert with a huge fire threat," 28 Aug. 2019 All are equipped with a 3.6-liter V-6 eHybrid matched to the dual-motor eFlite electrically variable transmission (EVT) to produce a combined 260 horsepower. James Raia, Houston Chronicle, "Chrysler Pacifica Hybrid: First electrified minivan," 23 Aug. 2019 This area has an intrinsically variable climate that alternates between flooding and drought, explains Scott Wing, research geologist and curator of paleobotany at the National Museum of Natural History. Anna Diamond, Smithsonian, "Do Goats Really Love to Jump and More Questions From Our Readers," 23 Aug. 2019 The food wavers from satisfactory one moment to downright bad the next, as variable as the sea. Christina Tkacik, baltimoresun.com, "Inconsistent food and service make for a frustrating dining experience at Inner Harbor’s Blackwall Hitch," 15 Aug. 2019 Phases of the moon show a variable size as the orb completes its 28-day journey around the Earth, so the card designs depicting this are also numerous. Brenda Yenke, cleveland.com, "Collecting lunar memorabilia: Yenke Peddler antiques," 15 Aug. 2019

Recent Examples on the Web: Noun

However, the one variable the team has been able to control — winning — is making things a little clearer as the final four weeks begin to unfold. Mark Faller, azcentral, "Arizona Diamondbacks have a friend in their schedule in wild-card race," 3 Sep. 2019 The big variable is that changes in fire behavior can dramatically change how much smoke is being sent into the air. Michelle Theriault Boots, Anchorage Daily News, "Wildfire smoke drifts back into Anchorage area," 26 Aug. 2019 One major variable is who is allowed to fill out these medical exemption forms (or write medical exemption statements) to replace the proof of immunization that’s usually required for school or day-care entry. Carolyn L. Todd, SELF, "What Actually Counts as a Medical Exemption for Vaccines—and What's at Stake When They're Abused," 26 Aug. 2019 So many variables are at stake if Diaz looks like his normal, dominating self. Justin Barrasso, SI.com, "Predictions, Unanswered Questions and Storylines for UFC 241," 16 Aug. 2019 The scientists then extrapolated across the globe to find where environment variables were likely to support populations of the animals—and how that will change with global warming. Douglas Main, National Geographic, "Raccoons are spreading across Earth—and climate change could help," 29 July 2019 Once it had been added, neither the poverty nor the employment nor the high-school-completion variable was significant. Robert Cherry, National Review, "The Case for More Occupational Training," 25 July 2019 But one variable that’s too often lost amid public hand wringing over test scores and new standards is arguably the most vital: the fallible humans charged with imparting an appetite and appreciation for learning. Quanta Magazine, "The Art of Teaching Math and Science," 16 June 2019 The variables are complex and the stakes shift daily. Lauren Silva Laughlin, WSJ, "Farmer’s Almanac Can’t Help Agribusiness," 5 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'variable.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of variable

Adjective

14th century, in the meaning defined at sense 1a

Noun

1816, in the meaning defined at sense 1a

History and Etymology for variable

Adjective

Middle English, borrowed from Anglo-French, borrowed from Late Latin variābilis "changeable," from Latin variāre "to make changeable, vary" + -ābilis -able

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More Definitions for variable

variability

noun

Financial Definition of variability

What It Is

Variability is the degree to which a data series deviates from its mean (or in the accounting world, how much a budgeted value differs from an actual value).

How It Works

For example, let's say Company XYZ