Home › Words › R › reguloreguloregulo means any of a number of temperatures to which a gas oven may be set. e.g. regulo 4.Etymology20th century, from Regulo, trademark for a type of thermostatic control on gas ovens.nounany of a number of temperatures to which a gas oven may be set. e.g. regulo 4a colonially-appointed chief in parts of AfricaDefinitions & examples from Wiktionary (CC BY-SA 3.0).