the world > action or operation > undertaking > beginning action or activity > [adjective] > bringing into action > brought into action or set in operation
started1468
started1519
raiseda1616
actuated1628
derepressed1960
1960 Biochem. & Biophysical Res. Communications3 373 (heading) A ‘pace-setting’ phenomenon in derepressed enzyme formation.
1971 Nature 11 June 395/2 Environmentally stimulated derepressed regions of the DNA molecule.