- regulate
- c.1630, from L.L. regulatus, pp. of regulare "to control by rule, direct" (5c.), from L. regula "rule" (see regular). Regulation is first recorded 1672, "act of regulating;" sense of "rule for management" is first attested 1715. Regulator is first recorded 1655; in Eng. history, with a capital R-, "member of a commission appointed in 1687 to manage county elections." In U.S. history, applied to local posses that kept order (or disturbed it) in rural regions c.1767-71. Meaning "clock by which other timepieces are set" is attested from 1758.