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#top variable

From The Collaborative International Dictionary of English v.0.48 [gcide]:

Variable \Va"ri*a*ble\, noun

1. That which is variable; that which varies, or is subject to change.

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.

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.

{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}.

From The Collaborative International Dictionary of English v.0.48 [gcide]:

Variable \Va"ri*a*ble\, adjective [L. variabilis: cf. F. variable.]

1. Having the capacity of varying or changing; capable of alternation in any manner; changeable; as, variable winds or seasons; a variable quantity.

His heart, I know, how variable and vain! --Milton.

{Variable quantity} (Math.), a variable.

From WordNet (r) 3.0 (2006) [wn]:

1: liable to or capable of change; "rainfall in the tropics is notoriously variable"; "variable winds"; "variable expenses" [ant: {invariable}]

2: marked by diversity or difference; "the varying angles of roof slope"; "nature is infinitely variable" [syn: {varying}, {variable}]

3: (used of a device) designed so that a property (as e.g. light) can be varied; "a variable capacitor"; "variable filters in front of the mercury xenon lights"

noun

1: something that is likely to vary; something that is subject to variation; "the weather is one variable to be considered"

2: a quantity that can assume any of a set of values [syn: {variable}, {variable quantity}]

3: a star that varies noticeably in brightness [syn: {variable star}, {variable}]

4: a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity