Online Google Dictionary

usefulness 中文解釋 wordnet sense Collocation Usage Collins Definition
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The quality or fact of being useful,
  1. The quality or fact of being useful
    • - faults that affect the book's usefulness

  1. utility: the quality of being of practical use
  2. In economics, utility is a measure of relative satisfaction. Given this measure, one may speak meaningfully of increasing or decreasing utility, and thereby explain economic behavior in terms of attempts to increase one's utility. ...
  3. In United States patent law, utility is a patentability requirement. Today, the utility requirement is the lowest bar and is easily met. Largely utility is used to prevent the patenting of inoperative devices such as perpetual motion machines. ...
  4. the quality of being useful, to which extent something is useful
  5. The importance of something for attaining a goal. See instrumental value.
  6. The representation should be useful in clinical practice.