activator

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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.

ac•ti•va•tor

(ˈæk təˌveɪ tər)

n.
1. a person or thing that activates.
2. Chem., Biochem. a catalyst.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.activator - (biology) any agency bringing about activationactivator - (biology) any agency bringing about activation; a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription
substance - the real physical matter of which a person or thing consists; "DNA is the substance of our genes"
biological science, biology - the science that studies living organisms
activating agent - (mineral extraction) a surface-active chemical used in flotation process to increase the attraction to a specific mineral
catalyst, accelerator - (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
sensitiser, sensitizer - (chemistry) a substance other than a catalyst that facilitates the start of a catalytic reaction
inhibitor - a substance that retards or stops an activity
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
aktivator

activator

[ˈæktɪˌveɪtəʳ] Nactivador m
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

activator

n activador m
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in classic literature ?
I shouldn't have given my mind to it again, I hope, if to this prison you had not been brought, and in an hour unfortunate for me, this day!' (In his agitation Young John adopted his mother's powerful construction of sentences.) 'When you first came upon me, sir, in the Lodge, this day, more as if a Upas tree had been made a capture of than a private defendant, such mingled streams of feelings broke loose again within me, that everything was for the first few minutes swept away before them, and I was going round and round in a vortex.
He was one of those delightful, irresponsible, erratic persons whose heads thoughts of this kind do not enter, and who are about as deadly to those whose lives are bound up with theirs as a Upas tree.
ABP-Nielsen poll has projected 267 seats for the NDA, 127 for the UPA and 148 for 'others.' Of the 'others,' the grand alliance in Uttar Pradesh is getting an estimated 50 seats.
Of those women taking 5 mg of UPA, 40.5%-42% became amenorrheic; of those taking 10 mg, 54.8%57.3% became amenorrheic, James Liu, MD, reported at the annual meeting of the American Society for Reproductive Medicine.
UPA is the only recognized body representing the fraternity of private drama producers of Pakistan.
Jaitley said the last two years of UPA government had double digit price rise, with consumer price inflation at 10.2 per cent in 2012-13.
All those who are with UPA, do not listen again to news coming from other directions.
In particular, the Modi public-relations machine proclaimed an end to the sops and compromises that supposedly characterized the UPA coalition.
Modi, it was claimed during the election campaign, would reverse the UPA's "poor governance" and "policy paralysis," introducing a radically new approach, based on his corporatist "Gujarat development model." In doing so, he would transform India, liberating it from the UPA's exhausted and ineffective policies and thus improving the lives of millions.
Modi reached Delhi on Tuesday morning to attend the BJP parliamentary board meet to strategise on pinning down the UPA, a day before it completes 9 years in power.