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var·i·able /ˈvɛriəbəl, ˈvær-/

變量,可變物(a.)易變的;可變的;變量的;變異的

vari·able /ˈvɛrɪəbəl, ˈvær-/ 形容詞

變量,變數,變異的,可調的

variable

事件虛擬變數

variable

變數

From: Network Terminology

variable

變數

Va·ri·a·ble, n.

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 x² - y² = R², *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 x² - y² = R², 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.

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Va·ri·a·ble a.

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

2. Liable to vary; too susceptible of change; mutable; fickle; unsteady; inconstant; as, the affections of men are variable; passions are variable.

*Lest that thy love prove likewise variable.* --*Shak.*

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

**Variable exhaust** Steam Eng., a blast pipe with an adjustable opening.

**Variable quantity** Math., a variable.

**Variable-rate mortgage** Finance, a mortgage whose percentage interest rate varies depending on some agreed standard, such as the prime rate; -- used often in financing the purchase of a home. Such a mortgage usually has a lower initial interest rate than a fixed-rate mortgage, and this permits buyers of a home to finance the purchase a house of higher price than would be possible with a fixed-rate loan.

**Variable stars** Astron., fixed stars which vary in their brightness, usually in more or less uniform periods.

Syn: -- Changeable; mutable; fickle; wavering; unsteady; versatile; inconstant.

From: WordNet (r) 2.0

variable

adj 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]

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"

n 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

quantity]

3: a star that varies noticeably in brightness [syn: variable

star]

4: a symbol (like x or y) that is used in mathematical or

logical expressions to represent a variable quantity