catalyst definizione dal dizionario inglese italiano

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Definizione monolingua


catalyst


Noun

catalyst (plural catalysts)


  1. (chemistry) A substance that increases the rate of a chemical reaction without being consumed in the process.
    • 1988, Lubert Stryer Biochemistry, 3rd edition, page 177
      Enzymes, the catalysts of biological systems, are remarkable molecular devices that determine the pattern of chemical transformations.
  2. Someone or something that encourages progress or change.
    Economic development and integration are working as a catalyst for peace.
    • 1978, Ernest George Schwiebert, Trout, Volume 2
      It was a morning baptized by my first cup of coffee, freshly brewed over a gravel-bar fire, while they celebrated with the stronger catalyst of sour-mash whiskey in their fishing-vest cups.
    • 2004, Michael B. Oren, Six Days of War: June 1967 and the making of the modern Middle East, page 76
      Israels fear for the reactor—rather than Egypts of it—was the greater catalyst for war.
    • 2006, The Freedom Writers, with Erin Gruwell, The Freedom Writers Diary: How a Teacher and 150 Teens Used Writing to Change Themselves and the World Around Them, Diary 74
      Rosa Parks was a true catalyst for change and she was only one person. Hearing about Rosa Parks and her protest showed me that there is hope for me and all the students in Ms. Gs classes to truly be catalysts for change.
  3. (automotive) A catalytic converter.

Definizione dizionario catalyst


catalizzatore
  someone or something that helps or encourages progress or change
  substance which increases the rate of a chemical reaction without being consumed in the process
  A substance whose presence alters the rate at which a chemical reaction proceeds, but whose own composition remains unchanged by the reaction. Catalysts are usually employed to accelerate reactions(positive catalyst), but retarding (negative) catalysts are also used. (Source: ALL)
  Una sostanza che accelera reazioni chimiche.
  A substance which speeds up chemical reactions.
acceleratore

Altri significati:
  Someone or something that encourages progress or change.
  (automotive) A catalytic converter.
  (chemistry) A substance that increases the rate of a chemical reaction without being consumed in the process.

Traduzione catalyst


catalizzatore ,acceleratore

Il nostro dizionario è liberamente ispirato al wikidizionario .... The online encyclopedia in which any reasonable person can join us in writing and editing entries on any encyclopedic topic



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