activator activator  /ˈæk tə ˌveɪ tər/


  • (n) (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


  1. They also found an activator in the blood plasma which enabled renin to work.
  2. FDA Commissioner Frank Young announced that the agency had approved the use of tissue plasminogen activator, or t-PA, as an emergency treatment for heart attacks.
  3. Then researchers determined that a drug called tissue plasminogen activator, or TPA, which has been used for years to treat heart attacks, can also alter the course of a stroke.


  1. So-Cal Horror Rocker Characula's Monster Power Extends to the 2013 Hollywood Music in Media Awards With the Nomination ...

    The Multi-Talented Performer's Fiery Take on Bad Company's Classic Is in the Top 50 on the Mediabase Activator Chart, Keeping Close Company With Rihanna, David Guetta, American Idol Phillip Phillips and The Goo Goo Dolls
    on June 22, 2013     Source: Marketwire

  2. Debbie Little at Yonkers

    Post Time: 7:10 p.m. Best Bet: Activator (8th) FIRST: Mile pace; $11,000; claiming 4 Outa My Head (BSears) 2-3-3 5-1 7 KidCourageousA (LStalbam) 1-7-6 8-5 1 Alloveramerica (GBrennan) 5-3-4 6-1 2 Tugboat (MMacDonald) 5-3-6 5-1 3 One ToughHombre (Bartlett) 6-7-7 4-1 5 JoPa'sWildCard (JPantalean) 8-6-7 20-1...
    on June 20, 2013     Source: New York Post


  1. "This work is significant because it shows that a SIRT1 activator can protect against neurodegeneration, highlighting the therapeutic potential of SIRT1 activators," said David Sinclair.
    on Jun 26, 2007 By: David Sinclair Source: Business Wire (press release)

  2. "Look at what Petco Park has done for downtown San Diego," McCann said. "A stadium could be a great activator for economic growth."
    on Jul 14, 2006 By: Jack McCann Source: San Diego Union Tribune

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profusion profusion
/prə ˈfju ʒən /