activate

[ak-tuh-veyt]
verb (used with object), activated, activating.
1.
to make active; cause to function or act.
2.
Physics.
a.
to render more reactive; excite: to activate a molecule.
b.
to induce radioactivity.
3.
to aerate (sewage) in order to accelerate decomposition of impure organic matter by microorganisms.
4.
Chemistry.
a.
to make (carbon, a catalyst, molecules, etc.) more active.
b.
to hasten (reactions) by various means, as heating.
5.
to place (a military unit or station) on an active status in an assigned capacity.

Origin:
1620–30; active + -ate1

activation, noun
nonactivation, noun
overactivate, verb (used with object), overactivated, overactivating.
superactivate, verb (used with object), superactivated, superactivating.
unactivated, adjective

activate, actuate, stimulate.


1. actuate, start, turn on, set going.


1. stop, halt, check.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
activate (ˈæktɪˌveɪt)
 
vb
1.  to make active or capable of action
2.  physics to make radioactive
3.  chem
 a.  to increase the rate of (a reaction)
 b.  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)
 
acti'vation
 
n
 
'activator
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Slang Dictionary

activated definition


  1. mod.
    tipsy; alcohol intoxicated. : All four of them went out and got a little activated.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw-Hill Education.
Cite This Source
Example sentences
Another teller activated a silent alarm to alert the police.
Later, other scientists and the public should also be activated to prohibit
  them.
First he made haphazard tangles of fibers activated by charged liquids.
It consumes power only when the electronic paper is activated.
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