activate (third-person singular simple present activates, present participle activating, simple past and past participle activated)
1.to make active; cause to function or act.
2.Physics. to render more reactive; excite, to activate a molecule.to induce radioactivity.
3.to aerate (sewage) in order to accelerate decomposition of impure organic matter by microorganisms.
4.Chemistry. to make (carbon, a catalyst, molecules, etc.) more active. to hasten (reactions) by various means, as heating.
5.to place (a military unit or station) on an active status in an assigned capacity.
1. to make active or capable of action
2. (physics) to make radioactive
3. (chem) to increase the rate of (a reaction) to treat (a substance, such as carbon or alumina) so as to increase powers of adsorption
4. (physiol) to prepare by arousal (the body or one of its organs (e.g. the brain)) for action
5. to purify (sewage) by aeration
6. (US, military) to create, mobilize, or organize (a unit) Derived Formsactivation, nounactivator, nounCollins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollinsPublishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cite This Source
1620s; see active + -ate (2). Related, Activated; activating.
Transmitters activate the synapses, electrical junctions in the body that stimulate the brain, nerves, and muscle cells to become active and communicate.
He touched the communications device to activate it.
It didn't activate at his touch, and he suspected it was locked to everyone but her.
Can you activate it?
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