Nearby Words
təˌveɪtverb (used with object), -vat·ed, -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), -vat·ed, -vat·ing.
su·per·ac·ti·vate, verb (used with object), -vat·ed, -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. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source
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Activate
is always a great word to know.
So is heat. Does it mean:
| a photon of penetrating electromagnetic radiation emitted from an atomic nucleus; electromagnetic radiation with wavelengths shorter than 1/10 of a nanometer |
| nonmechanical energy transfer with reference to a temperature difference between a system and its surroundings |
Collins
World English Dictionary
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
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