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activate
[ak-tuh-veyt]
verb (used with object)
to make active; cause to function or act.
Physics.
to render more reactive; excite.
to activate a molecule.
to induce radioactivity.
to aerate (sewage) in order to accelerate decomposition of impure organic matter by microorganisms.
Chemistry.
to make (carbon, a catalyst, molecules, etc.) more active.
to hasten (reactions) by various means, as heating.
to place (a military unit or station) on an active status in an assigned capacity.
verb (used without object)
to become active or functional.
activate
/ ˈæktɪˌveɪt /
verb
to make active or capable of action
physics to make radioactive
chem
to increase the rate of (a reaction)
to treat (a substance, such as carbon or alumina) so as to increase powers of adsorption
physiol to prepare by arousal (the body or one of its organs (e.g. the brain)) for action
to purify (sewage) by aeration
military to create, mobilize, or organize (a unit)
Other Word Forms
- activation noun
- nonactivation noun
- overactivate verb (used with object)
- superactivate verb (used with object)
- unactivated adjective
- activator noun
Example Sentences
Their study shows that neurons can release an enzyme outside the cell that activates pain signals following an injury.
"We found that the more energetically activated the water is, the better it favors binding between the guest molecule and the host when it is displaced."
This pathway activates when cells detect foreign DNA, setting off immune defenses.
According to the researchers, this type of heating can help lower blood pressure, activate parts of the immune system and gradually improve how the body handles heat stress.
The system could even be set to activate automatically whenever enough water has accumulated.
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