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www.merriam-webster.com/dictionary/catalyst

Catalyst definition is - a substance that enables a chemical reaction to proceed at a usually faster rate or under different conditions (as at a lower temperature) than otherwise possible. How to use catalyst in a sentence. Word History of catalyst

www.dictionary.com/browse/catalyst

British Dictionary definitions for catalyst. catalyst. noun. a substance that increases the rate of a chemical reaction without itself suffering any permanent chemical change Compare inhibitor (def. 2) a person or thing that causes a change. Show More.

www.thefreedictionary.com/catalyst

catalyst - something that causes an important event to happen; "the invasion acted as a catalyst to unite the country" causal agency , causal agent , cause - any entity that produces an effect or is responsible for events or results

en.wikipedia.org/wiki/Catalysis

Catalysis (/ k ə ˈ t æ l ə s ɪ s /) is the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst (/ ...

en.oxforddictionaries.com/definition/catalyst

Definition of catalyst - a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change

www.collinsdictionary.com/us/dictionary/english/catalyst

A catalyst is an agent or compound that is added to a process to make a chemical reaction happen more quickly. catalysis , monolith catalyst Collins English Dictionary .

www.vocabulary.com/dictionary/catalyst

A catalyst is an event or person causing a change. Getting kicked out of your parents' house might be a catalyst for becoming more independent. The noun catalyst is something or someone that causes a change and is derived from a Greek word.

www.chemicool.com/definition/catalyst.html

A catalyst is a substance that speeds up a chemical reaction, but is not consumed by the reaction; hence a catalyst can be recovered chemically unchanged at the end of the reaction it has been used to speed up, or catalyze.

www.yourdictionary.com/catalyst

The definition of a catalyst is someone or something that speeds up or brings about an event. An example of catalyst is how President Bush's claims that Iraq had weapons of mass destruction started the war in Iraq. Catalyst is defined as a substance that speeds up the rate of a chemical reaction.

www.merriam-webster.com/dictionary/catalysis

Catalysis definition is - a modification and especially increase in the rate of a chemical reaction induced by material unchanged chemically at the end of the reaction. ... catalysis. catalyst. catalyte. catalytic. Statistics for catalysis. Look-up Popularity.