regulate (v.)youdaoicibaDictYouDict[regulate 词源字典]
early 15c., "adjust by rule, control," from Late Latin regulatus, past participle of regulare "to control by rule, direct," from Latin regula "rule" (see regular). Meaning "to govern by restriction" is from 1620s. Related: Regulated; regulating.[regulate etymology, regulate origin, 英语词源]