make active or more active; "activate an old file" make (substances) radioactive aerate (sewage) so as to favor the growth of organisms that decompose organic matter make more adsorptive; "activate a metal
make (substances) radioactive aerate (sewage) so as to favor the growth of organisms that decompose organic matter make more adsorptive; "activate a metal
If a device or process is activated, something causes it to start working. Video cameras with night vision can be activated by movement. a voice-activated computer. + activation ac·ti·va·tion A computer controls the activation of an air bag. to make an electrical system or chemical process start working deactivate
{f} set in motion, make active, start; speed up a reaction (Chemistry); make radioactive (Physics)