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5 definitions found
 for variable
From The Collaborative International Dictionary of English v.0.48 :

  Variable \Va"ri*a*ble\, a. [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.
        [1913 Webster]
  
     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-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.
        [1913 Webster]
  
     Syn: Changeable; mutable; fickle; wavering; unsteady;
          versatile; inconstant.
          [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  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]

From WordNet (r) 3.0 (2006) :

  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,
         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"
      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, 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

From Moby Thesaurus II by Grady Ward, 1.0 :

  181 Moby Thesaurus words for "variable":
     able to adapt, adaptable, adjustable, adrift, afloat, agnostic,
     alterable, alterative, alternating, ambiguous, amorphous, broken,
     capricious, careening, catchy, chancy, changeable, changeful,
     changing, checkered, choppy, desultory, deviable, deviating,
     deviative, deviatory, dicey, different, disconnected,
     discontinuous, disorderly, divaricate, divergent, diversified,
     diversiform, dizzy, doubting, eccentric, equivocal, erose, erratic,
     ever-changing, fast and loose, fickle, fitful, flexible,
     flickering, flighty, flitting, fluctuating, fluid, freakish, giddy,
     guttering, halting, herky-jerky, hesitant, hesitating, heteroclite,
     immethodical, impermanent, impetuous, impulsive, incalculable,
     inconsistent, inconstant, indecisive, indemonstrable, infirm,
     intermittent, intermitting, irregular, irresolute, irresponsible,
     jagged, jerky, kaleidoscopic, lurching, malleable, many-sided,
     mazy, mercurial, metamorphic, mobile, modifiable, moody, motley,
     movable, mutable, nonconformist, nonstandard, nonuniform, patchy,
     permutable, plastic, pluralistic, polysemous, protean, proteiform,
     ragged, rambling, resilient, restless, rough, roving, rubbery,
     scatterbrained, scrappy, shapeless, shifting, shifty, shuffling,
     skeptical, slippery, snatchy, spasmatic, spasmic, spasmodic,
     spastic, spineless, sporadic, spotty, staggering, supple,
     temperamental, ticklish, touch-and-go, transient, transitory,
     uncertain, unconfirmable, uncontrolled, unconvinced, undependable,
     undisciplined, undivinable, unequable, unequal, uneven, unfixed,
     unforeseeable, unmethodical, unmetrical, unorthodox, unpersuaded,
     unpredictable, unprovable, unregular, unreliable, unrestrained,
     unrhythmical, unsettled, unstable, unstable as water, unstaid,
     unsteadfast, unsteady, unsure, unsystematic, ununiform,
     unverifiable, vacillating, vagrant, variegated, variform, various,
     varying, veering, vicissitudinary, vicissitudinous, volatile,
     wandering, wanton, wavering, wavery, wavy, wayward, whimsical,
     wishy-washy, wobbling, wobbly
  
  

From The Free On-line Dictionary of Computing (18 March 2015) :

  variable
  var
  
      (Sometimes "var" /veir/ or /var/) A named memory
     location in which a program can store intermediate results and
     from which it can read it them.  Each programming language
     has different rules about how variables can be named, typed,
     and used.  Typically, a value is "assigned" to a variable in
     an assignment statement.  The value is obtained by
     evaluating an expression and then stored in the variable.  For
     example, the assignment
  
     	x = y + 1
  
     means "add one to y and store the result in x".  This may look
     like a mathematical equation but the mathematical equality is
     only true in the program until the value of x or y changes.
     Furthermore, statements like
  
     	x = x + 1
  
     are common.  This means "add one to x", which only makes sense
     as a state changing operation, not as a mathematical equality.
  
     The simplest form of variable corresponds to a single-{word
     of memory or a CPU register and an assignment to a
     load or store machine code operation.
  
     A variable is usually defined to have a type, which never
     changes, and which defines the set of values the variable can
     hold.  A type may specify a single ("atomic") value or a
     collection ("aggregate") of values of the same or different
     types.  A common aggregate type is the array - a set of
     values, one of which can be selected by supplying a numerical
     index.
  
     Languages may be untyped, weakly typed, strongly typed,
     or some combination.  Object-oriented programming languages
     extend this to object types or classes.
  
     A variable's scope is the region of the program source
     within which it represents a certain thing.  Scoping rules are
     also highly language dependent but most serious languages
     support both local variables and global variables.
     Subroutine and function formal arguments are special
     variables which are set automatically by the language runtime
     on entry to the subroutine.
  
     In a functional programming language, a variable's value
     never changes and change of state is handled as recursion over
     lists of values.
  
     (2004-11-16)
  

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