util·i·ty /juˈtɪləti/
 實用程式,工具公用程式,實用品,實用,公用事業(a.)實用的,有多種用途的
 utility
 公用常式
 utility
 公用程式; 公用事業; 公用程式; 實用程式; 應用性; 應用程式 UTIL
 utility
 公用程式
 U·til·i·ty n.
 1. The quality or state of being useful; usefulness; production of good; profitableness to some valuable end; as, the utility of manure upon land; the utility of the sciences; the utility of medicines.
    The utility of the enterprises was, however, so great and obvious that all opposition proved useless.   --Macaulay.
 2. Polit. Econ. Adaptation to satisfy the desires or wants; intrinsic value. See Note under Value, 2.
    Value in use is utility, and nothing else, and in political economy should be called by that name and no other.   --F. A. Walker.
 3. Happiness; the greatest good, or happiness, of the greatest number, -- the foundation of utilitarianism.
 Syn: -- Usefulness; advantageous; benefit; profit; avail; service.
 Usage: -- Utility, Usefulness. Usefulness has an Anglo-Saxon prefix, utility is Latin; and hence the former is used chiefly of things in the concrete, while the latter is employed more in a general and abstract sense. Thus, we speak of the utility of an invention, and the usefulness of the thing invented; of the utility of an institution, and the usefulness of an individual. So beauty and utility (not usefulness) are brought into comparison. Still, the words are often used interchangeably.
 ◄ ►
 utility
      adj 1: used of beef; usable but inferior [syn: utility(a), utility-grade]
      2: capable of substituting in any of several positions on a
         team; "a utility infielder" [syn: utility(a), substitute(a)]
      n 1: a company that performs a public service; subject to
           government regulation [syn: public utility, public-service
           corporation]
      2: the quality of being of practical use [syn: usefulness]
         [ant: inutility, inutility]
      3: the service provided by a utility company; "the cost of
         utilities never decreases"
      4: (economics) a measure that is to be maximized in any
         situation involving choice
      5: (computer science) a program designed for general support of
         the processes of a computer; "a computer system provides
         utility programs to perform the tasks needed by most
         users" [syn: utility program, service program]
      6: a facility composed of one or more pieces of equipment
         connected to or part of a structure and designed to
         provide a service such as heat or electricity or water or
         sewage disposal; "the price of the house included all
         utilities"