Noun

(en noun)

A conveyance; a device for carrying or transporting substances, objects or individuals.

* {{quote-book, year=2006, author=(Edwin Black)

, title= Internal Combustion, chapter=1 , passage=But electric vehicles and the batteries that made them run became ensnared in corporate scandals, fraud, and monopolistic corruption that shook the confidence of the nation and inspired automotive upstarts.}}

* {{quote-magazine, date=2013-06-29, volume=407, issue=8842, page=28, magazine=(The Economist)

, title= High and wet , passage=Floods in northern India, mostly in the small state of Uttarakhand, have wrought disaster on an enormous scale.

A medium for expression of talent or views.

A liquid content (e.g. oil) which acts as a binding and drying agent in paint. (FM 55-501).

An entity to achieve an end.

* {{quote-magazine, date=2013-06-07, author= Ed Pilkington

, volume=188, issue=26, page=6, magazine=(The Guardian Weekly) , title= ‘Killer robots’ should be banned in advance, UN told , passage=In his submission to the UN, [Christof] Heyns points to the experience of drones. Unmanned aerial vehicles were intended initially only for surveillance, and their use for offensive purposes was prohibited, yet once strategists realised their perceived advantages as a means of carrying out targeted killings, all objections were swept out of the way.}}

(Buddhism) A mode or method of spiritual practice; a yana.

(Hinduism) An animal or (rarely) a plant on which a Hindu deity rides or sits

Noun

(en noun)

(chemistry) A substance that increases the rate of a chemical reaction without being consumed in the process.

* 1988 , Biochemistry , 3rd edition, page 177

Enzymes, the catalysts of biological systems, are remarkable molecular devices that determine the pattern of chemical transformations.

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

Israel's fear for the reactor—rather than Egypt's 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. G's classes to truly be ' catalysts for change.

* '>citation

(literature) An inciting incident which that sets the successive conflict into motion.

(automotive) A catalytic converter.