verb (used with object), ac·ti·vat·ed, ac·ti·vat·ing.
- to render more reactive; excite: to activate a molecule.
- to induce radioactivity.
- to make (carbon, a catalyst, molecules, etc.) more active.
- to hasten (reactions) by various means, as heating.
Examples from the Web for activate
I read a study not long ago that chewing actually does activate your brain.
The manager responded by directing the first teller to call the police and activate the alarm.
Perry will home in on the darkest corners of the Tea Party mind and work relentlessly to activate the demons that lurk there.
Made from a Chinese root, TA-65 helps to activate telomerase, which rebuilds the strands.
We now know that both of the so-called printer bombs employed circuit boards from cellphones to activate the detonators.
We could press the button to activate the exercise mechanisms in our bunks.Perfect Control|Richard Stockham
He had not the slightest idea of how to activate the machines, let alone broadcast in the proper code.Storm Over Warlock|Andre Norton
This warmth was sufficient to activate most of the five-lined skinks, and a few reptiles of other kinds.
I shall now activate the mechanism—by placing the cube on the platform—at exactly three o'clock.Two Timer|Fredric Brown
We contend with it so as to remove it and, at the same time, activate the spiritual nature.An Interpretation of Friends Worship|N. Jean Toomer
British Dictionary definitions for activate
- to increase the rate of (a reaction)
- to treat (a substance, such as carbon or alumina) so as to increase powers of adsorption