- Apply rules to - Subject to restrictions - To adjust by rule, method, or established mode; to
direct by rule or restriction; to subject to governing principles or
laws. - To put in good order; as, to regulate the disordered
state of a nation or its finances. - To adjust, or maintain, with respect to a desired
rate, degree, or condition; as, to regulate the temperature of a room,
the pressure of steam, the speed of a machine, etc.