regulator
//ˈreɡjəleɪtər//
Noun
regulatorSingular
regulatorsPlural
1
A device or mechanism that automatically controls or maintains a desired level, pressure, temperature, or other variable in a system
The pressure regulator ensures that the gas flows at a constant rate.
2
A person or organization that supervises and enforces rules, laws, or standards in a particular industry or area
Financial regulators monitor banks to ensure they follow the law.
3
A gene or protein that controls the expression or activity of other genes or biological processes
This protein acts as a regulator of cell growth and division.