activation

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Related to activation factor: Factor xii deficiency

ac·ti·vate

 (ăk′tə-vāt′)
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.

ac′ti·va′tion n.
ac′ti·va′tor n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

activation

Order to active duty (other than for training) in the Federal service. See also active duty; federal service.
Dictionary of Military and Associated Terms. US Department of Defense 2005.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.activation - stimulation of activity in an organism or chemicalactivation - stimulation of activity in an organism or chemical
indweller - activation by an inner spirit or force or principle; "the Holy Spirit is the indweller of the church and its members"
stimulation - (physiology) the effect of a stimulus (on nerves or organs etc.)
inactivation - the process of rendering inactive; "the gene inactivation system"; "thermal inactivation of serum samples"
2.activation - the activity of causing to have energy and be activeactivation - the activity of causing to have energy and be active
activity - any specific behavior; "they avoided all recreational activity"
electrification - the activity of thrilling or markedly exciting some person or group
invigoration, vivification, animation - the activity of giving vitality and vigour to something
3.activation - making active and effective (as a bomb)activation - making active and effective (as a bomb)
commencement, start, beginning - the act of starting something; "he was responsible for the beginning of negotiations"
defusing, deactivation - the act of deactivating or making ineffective (as a bomb)
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.

activation

noun start, triggering, turning on, switching on, animation, arousal, initiation, mobilization, setting in motion, actuation A computer controls the activation of an airbag.
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002
Translations
aktivaatioaktivointi
aktivacija

activation

[ˌæktɪˈveɪʃən] n
[mechanism, alarm, device, camera] → activation f
(CHEMISTRY)activation factivation order n (MILITARY)ordre m d'activation
Collins English/French Electronic Resource. © HarperCollins Publishers 2005

activation

nAktivierung f
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

activation

[æktɪˈveɪʃn] nattivazione f
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in periodicals archive ?
In conclusion, our study confirmed previous studies reporting PLC[zeta] as an oocyte activation factor that its deficiency can be amended by AOA.
But then a coinvestigator drilled down deeper into the data and came up with the explanation: The benefit in terms of enhanced flu vaccine immunogenicity through temporary withholding of methotrexate was confined to the subgroup of RA patients with high baseline levels of B-cell activation factor (RAFF).
(3) Like mast cells in the lungs or skin, they release histamine, leukotrienes, thromboxane, platelet activation factor (PAF), tryptase, chymase, and renin once activated by allergic stimuli.