n. 1. One that regulates, as: a. The mechanism in a watch by which its speed is governed. b. A highly accurate clock used as a standard for timing other clocks. c. A device used to maintain uniform speed in a machine; a governor. d. A device used to control the flow of gases, liquids, or electric current. 2. One, such as the member of a governmental regulatory agency, that ensures compliance with laws, regulations, and established rules: banking regulators; price regulators. 3. A substance that affects the amount of product or the progress of a biochemical reaction or process: a regulator of embryogenesis. 4. See regulator gene. |
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