SCRABBLE ® cheat


catalyst

Definitions


[ˈkatəlɪst], (Noun)

Definitions:
- a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
(e.g: chlorine acts as a catalyst promoting the breakdown of ozone)


Phrases:

Origin:
early 20th century: from catalysis, on the pattern of analyst




definition by Oxford Dictionaries




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