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attenuation

Pronunciation: ă-ten′yū-ā′shŭn

Definition:

  1. The act of attenuating.
  2. Diminution of virulence in a strain of an organism, obtained through selection of variants that occur naturally or through experimental means.
  3. Loss of energy of a beam of radiant, ultrasound, or other energy because of absorption, scattering, beam divergence, and other causes as the beam propagates through a medium.
  4. Regulation of termination of transcription; involved in control of gene expression in specific tissues.
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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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