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Definition of injection
injection
/ɪnˈdʒɛk.ʃən/
in · jec · tion
Plural:injections
•Adjective:injectable
injection Lexical Profile
CEFR
B2
Grade
6
Tier
2
Usage
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Wordle Guess
• noun
1
The act or process of forcing a liquid, especially a drug or vaccine, into a person's body using a needle and syringe.
Example
"The nurse administered the injection quickly to minimize the child's discomfort."
2
The act of introducing a new or different element, such as funds, energy, or ideas, into a situation, system, or organization.
Example
"The struggling startup desperately needed a cash injection to avoid bankruptcy."
3
The forcing of fuel into the cylinders of an internal combustion engine.
Example
"Modern cars rely on electronic fuel injection to improve efficiency and reduce exhaust emissions."
Synonyms
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Word Origin & Etymology
From Latin 'injectio' (noun of action from 'inicere'), derived from 'in-' (into) + 'jacere' (to throw).
Cite this Entry
Wordmom. (2026). Definition of Injection. In Wordmom Dictionary. Retrieved Oct 12, 2026, from https://wordmom.com/dictionary/injection