Usually means: Substance that accelerates chemical reactions.
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We found 61 dictionaries that define the word catalyst:

General (23 matching dictionaries)
  1. catalyst: Merriam-Webster.com
  2. catalyst: Oxford Learner's Dictionaries
  3. catalyst: American Heritage Dictionary of the English Language
  4. catalyst: Collins English Dictionary
  5. catalyst: Vocabulary.com
  6. Catalyst, catalyst: Wordnik
  7. catalyst: Cambridge Advanced Learner's Dictionary
  8. catalyst: Wiktionary
  9. catalyst: Webster's New World College Dictionary, 4th Ed.
  10. catalyst: The Wordsmyth English Dictionary-Thesaurus
  11. catalyst: Infoplease Dictionary
  12. catalyst: Dictionary.com
  13. catalyst: Online Etymology Dictionary
  14. catalyst: Cambridge Essential American English Dictionary
  15. Catalyst (New Found Glory album), Catalyst (Prototype album), Catalyst (TV program), Catalyst (band), Catalyst (building), Catalyst (disambiguation), Catalyst (journal), Catalyst (magazine), Catalyst (nonprofit organization), Catalyst (novel), Catalyst (role-playing game supplements), Catalyst (science park), Catalyst (software), Catalyst (think tank), Catalyst, The Catalyst (newspaper), The Catalyst: Wikipedia, the Free Encyclopedia
  16. catalyst: Rhymezone
  17. catalyst: AllWords.com Multi-Lingual Dictionary
  18. catalyst: Free Dictionary
  19. catalyst: Mnemonic Dictionary
  20. catalyst: LookWAYup Translating Dictionary/Thesaurus
  21. catalyst: Dictionary/thesaurus

Art (1 matching dictionary)
  1. catalyst: ArtLex Lexicon of Visual Art Terminology

Business (4 matching dictionaries)
  1. Construction Term Glossary (No longer online)
  2. Catalyst: Investopedia
  3. catalyst: Legal dictionary
  4. BusinessDictionary.com (No longer online)

Computing (2 matching dictionaries)
  1. Catalyst: Cybernetics and Systems
  2. catalyst: Encyclopedia

Medicine (8 matching dictionaries)
  1. Dorland's Illustrated Medical Dictionary (No longer online)
  2. Catalyst: MedTerms.com Medical Dictionary
  3. online medical dictionary (No longer online)
  4. Hepatitis C Information Central (No longer online)
  5. Glossary of HIV/AIDS Related Terms (No longer online)
  6. catalyst: Medical dictionary
  7. Vitamin Glossary (No longer online)
  8. Catalyst: Drug Medical Dictionary

Science (6 matching dictionaries)
  1. Electrochemistry Dictionary (No longer online)
  2. Chemistry Dictionary (No longer online)
  3. Catalyst: Biology dictionary
  4. Catalyst: Eric Weisstein's World of Chemistry
  5. catalyst: UNCChem Glossary
  6. AGRICULTURAL AND ENVIRONMENTAL BIOTECHNOLOGY (No longer online)

Slang (1 matching dictionary)
  1. catalyst: Urban Dictionary

Tech (16 matching dictionaries)
  1. Book Binding (No longer online)
  2. Catalyst: Glossary of Air Pollution Terms
  3. AUTOMOTIVE TERMS (No longer online)
  4. Dairy Glossary (No longer online)
  5. Catalyst: Glossary of Terms on Engines and Emissions
  6. Glossary of Composite Terms (No longer online)
  7. Catalyst: Construction deterioration & building durability glossary
  8. Glossary of Common Hearth and Heating Terms (No longer online)
  9. Explosives (No longer online)
  10. K & A glossary (No longer online)
  11. National Glass Association Glossary (No longer online)
  12. Lake and Water Word Glossary (No longer online)
  13. PUMP AND SEAL TERMS (No longer online)
  14. Catalyst: Fiberglass Glossary
  15. Oil Analysis (No longer online)
  16. CATALYST: Industry Terms for Fiberglass

(Note: See catalysts as well.)

Definitions from Wiktionary (
)
American English Definition British English Definition
noun:  (chemistry) A substance that increases the rate of a chemical reaction without being consumed in the process.
noun:  (figurative) Something that encourages progress or change.
noun:  (literature) An inciting incident that sets the successive conflict into motion.
noun:  (automotive) A catalytic converter.
noun:  (fantasy) An object that facilitates the casting of a spell (such as a magic wand).

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Colors:
    electric blue,     neon green,     metallic silver,     bright yellow,     cobalt blue,     lime green,     hot pink,     crimson,     turquoise,     magenta



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