Definition of Activation in English :

Define Activation in English

Activation meaning in English

Meaning of Activation in English

Pronunciation of Activation in English

Activation pronunciation in English

Pronounce Activation in English


see synonyms of activation


1. activation

stimulation of activity in an organism or chemical

2. activating, activation, energizing

the activity of causing to have energy and be active

3. activation

making active and effective (as a bomb)

WordNet Lexical Database for English. Princeton University. 2010.


see synonyms of activation
verb (transitive)
to make active or capable of action
2. physics
to make radioactive
3. chemistry
to increase the rate of (a reaction)
to treat (a substance, such as carbon or alumina) so as to increase powers of adsorption
4. physiology
to prepare by arousal (the body or one of its organs (e.g. the brain)) for action
to purify (sewage) by aeration
6. US military
to create, mobilize, or organize (a unit)

Collins English Dictionary. Copyright © HarperCollins Publishers


see synonyms of activation
verb transitiveWord forms: ˈactiˌvated or ˈactiˌvating
to make active; cause to engage in activity
to put (an inactive military unit) on an active status by assigning personnel, equipment, etc. to it
to make radioactive
to make capable of reacting or of accelerating a chemical reaction
to treat (sewage) with air so that aerobes will become active in it, thus purifying it

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.


see synonyms of activation
tr.v. ac·ti·vat·ed, ac·ti·vat·ing, ac·ti·vates
1. To set in motion; make active or more active.
2. To organize or create (a military unit, for example): activate the National Guard.
3. To treat (sewage) with aeration and bacteria to aid decomposition.
4. Chemistry To accelerate a reaction in, as by heat.
5. Physics To make (a substance) radioactive.
6. Biology To convert (a molecule or cell) into a form that carries out a specific action: activate an enzyme; activate B cells.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.