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Pronunciation: ă-ten′yū-ā-tŏr, -tōr


  1. An electrical system of resistors and capacitors used to reduce the strength of electrical signals, as in ultrasonography.
  2. The terminator sequence in DNA at which attenuation occurs; located between the operator and the gene for the first protein in an operon.
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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.