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Variable 2.jpg


Middle English, from Anglo-French, from Latin variabilis, from variare to vary


  • 1 a : able or apt to vary : subject to variation or changes <variable winds> <variable costs>
b : fickle, inconstant


A variable (pronounced /ˈvɛəriəbəl/; VAIR-ee-ə-bəl) is a symbol that stands for a value that may vary; the term usually occurs in opposition to constant, which is a symbol for a non-varying value, i.e. completely fixed or fixed in the context of use. The concepts of constants and variables are fundamental to all modern mathematics, science, engineering, and computer programming.[1]