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  1. ef·fect
  2. noun


    • 1. cause (something) to happen; bring about:

      nature always effected a cure
  3. Variation

    • n.: noun: effect, plural noun: effects

    • noun

      a change which is a result or consequence of an action or other cause:

      the state of being or becoming operative.

    • verb

      cause (something) to happen; bring about:
    • noun

      the rotation of the plane of polarization of light when reflected from a magnetized surface.

      the production of double refraction in a substance by an electric field.

    • noun

      an effect in which certain atomic nuclei bound in a crystal emit gamma rays of sharply defined frequency which can be used as a probe of energy levels in other nuclei.
    • noun

      a phenomenon whereby a given change in a particular input, such as government spending, causes a larger change in an output, such as gross domestic product:
    • noun

      (in chaos theory) the phenomenon whereby a minute localized change in a complex system can have large effects elsewhere.
    • noun

      a sound other than speech or music made artificially for use in a play, movie, or other broadcast production:
    • noun

      the effect of the domino theory.
    • noun

      a process in which an electron in an outer shell of an atom makes a transition to a vacancy in an inner shell. The energy gained is transferred to an electron that escapes from the atom.
    • noun

      the rotation of the plane of polarization of electromagnetic waves in certain substances in a magnetic field.
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