2. Liable to vary; too susceptible of change; mutable; fickle; unsteady; inconstant; as, the affections of men are variable; passions are variable. [1913 Webster]
Lest that thy love prove likewise variable. --Shak. [1913 Webster]
His heart, I know, how variable and vain! --Milton. [1913 Webster]
{Variable exhaust} (Steam Eng.), a blast pipe with an adjustable opening.
{Variable quantity} (Math.), a variable.
{Variable stars} (Astron.), fixed stars which vary in their brightness, usually in more or less uniform periods. [1913 Webster]
Syn: Changeable; mutable; fickle; wavering; unsteady; versatile; inconstant. [1913 Webster]
Variable Va"ri*a*ble, n. 1. That which is variable; that which varies, or is subject to change. [1913 Webster]
2. (Math.) A quantity which may increase or decrease; a quantity which admits of an infinite number of values in the same expression; a variable quantity; as, in the equation x^2 - y^2 = R^2, x and y are variables. [1913 Webster]
3. (Naut.) (a) A shifting wind, or one that varies in force. (b) pl. Those parts of the sea where a steady wind is not expected, especially the parts between the trade-wind belts. [1913 Webster]
{Independent variable} (Math.), that one of two or more variables, connected with each other in any way whatever, to which changes are supposed to be given at will. Thus, in the equation x^2 - y^2 = R^2, if arbitrary changes are supposed to be given to x, then x is the independent variable, and y is called a function of x. There may be two or more independent variables in an equation or problem. Cf. {Dependent variable}, under Dependent. [1913 Webster]
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