in·jec·tor

[in-jek-ter]
noun
1.
a person or thing that injects.
2.
Machinery.
a.
a device for injecting feedwater into a boiler against high pressure by means of a jet of steam.
b.
Also called fuel injector. a mechanism consisting of a pump, valves, and nozzles for spraying fuel into the cylinders of an internal-combustion engine.

Origin:
1735–45; inject + -or2

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
injector (ɪnˈdʒɛktə) [Click for IPA pronunciation guide]
 
n
1.  a person or thing that injects
2.  a device for spraying fuel into the combustion chamber of an internal-combustion engine
3.  Also: inspirator a device for forcing water into a steam boiler

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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00:10
Injector is always a great word to know.
So is slumgullion. Does it mean:
a stew of meat, vegetables, potatoes, etc.
a scrap or morsel of food left at a meal.
Example sentences
Injector lines using this material exhibit a significantly higher failure rate.
The first plasma injector began operating a year ago.
He had actually been running the electron injector at that kilovoltage for the past eight hours.
Then diesel fuel from another tank is injected directly into the chamber using a low-pressure fuel injector.
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