Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The act of expecting.
  • n. Eager anticipation: eyes shining with expectation.
  • n. The state of being expected.
  • n. Something expected: a result that did not live up to expectations.
  • n. Prospects, especially of success or gain.
  • n. Statistics The expected value of a random variable.
  • n. Statistics The mean of a random variable.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The act or state of expecting or looking forward to an event as about to happen.
  • n. That which is expected or looked for.
  • n. The prospect of the future; grounds upon which something excellent is expected to occur; prospect of anything good to come, especially of property or rank.
  • n. The value of any chance (as the prospect of prize or property) which depends upon some contingent event.
  • n. The first moment; the long-run average value of a variable over many independent repetitions of an experiment.
  • n. the arithmetic mean
  • n. (rare) The leaving of a disease principally to the efforts of nature to effect a cure.

from the GNU version of the Collaborative International Dictionary of English

  • n. The act or state of expecting or looking forward to an event as about to happen.
  • n. That which is expected or looked for.
  • n. The prospect of the future; grounds upon which something excellent is expected to happen; prospect of anything good to come, esp. of property or rank.
  • n. The value of any chance (as the prospect of prize or property) which depends upon some contingent event. Expectations are computed for or against the occurrence of the event.
  • n. The leaving of the disease principally to the efforts of nature to effect a cure.

from The Century Dictionary and Cyclopedia

  • n. The act or state of waiting or awaiting with confident anticipation.
  • n. The act or state of expecting; a looking forward to an event as about to happen; belief in the occurrence of something hereafter.
  • n. That which is expected; what is anticipated or looked forward to.
  • n. Prospect of future good, as of possessions, honors, advancement, and the like: usually in the plural.
  • n. A state or qualities in a person which excite anticipation in others of some future excellence; promise.
  • n. In medicine, same as expectant method (which see, under expectant).
  • n. In the theory of probabilities, the present value of contingent future gain. It is equal to the value to be gained multiplied by the probability of gaining it. No account is taken of interest, as not being germane to the problems usually treated.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. anticipating with confidence of fulfillment
  • n. belief about (or mental picture of) the future
  • n. the feeling that something is about to happen
  • n. the sum of the values of a random variable divided by the number of values

Etymologies

From Latin expectationem, from expectare. (Wiktionary)

Examples

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