activation
Use Activation in a sentence
təˌveɪt verb (used with object), ac·ti·vat·ed, ac·ti·vat·ing.
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.
Related forms
ac·ti·va·tion, noun
non·ac·ti·va·tion, noun
o·ver·ac·ti·vate, verb (used with object), o·ver·ac·ti·vat·ed, o·ver·ac·ti·vat·ing.
su·per·ac·ti·vate, verb (used with object), su·per·ac·ti·vat·ed, su·per·ac·ti·vat·ing.
un·ac·ti·vat·ed, adjective
Synonyms
1. actuate, start, turn on, set going.
1. actuate, start, turn on, set going.
Antonyms
1. stop, halt, check.
1. stop, halt, check.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source
|
Link To activation
00:10
Activation
is always a great word to know.
So is gobo. Does it mean:
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
Collins
World English Dictionary
activate (ˈæktɪˌveɪt) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —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 | |
| 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
Cite This Source
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Example sentences
The activation of the memory gene, then, seemed to be what made the learning possible.
All three groups showed the same reduced activation of the left temporal lobe while reading.
The tortured molecule is stabilized by symmetry, by there being no low activation energy path to decomposition.
Natural pain moderation depends on the activation of a brain cell surface protein called the mu-opioid receptor.
Nearby Words
Copyright © 2013 Dictionary.com, LLC. All rights reserved.
