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Medical Term:


Pronunciation: op'er-a-tor


  1. One who performs an operation or operates equipment.
  2. In genetics, a sequence of DNA that interacts with a repressor of operon to control the expression of adjacent structural genes.
  3. A symbol representing a mathematic operation.

See: operator gene

[L. worker, fr operor, to work]

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.