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Definition of injection

injection

/ɪnˈdʒɛk.ʃən/
in · jec · tion
Plural:injections
•
Adjective:injectable
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injection Lexical Profile

injection Game Scores & Validity

• 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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Antonyms
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• Rhymes for injection

• Nearby Words

initiatrix
inject
injectable
injection
injector
injudiciously
injunction

Word Origin & Etymology

From Latin 'injectio' (noun of action from 'inicere'), derived from 'in-' (into) + 'jacere' (to throw).

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Injection. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/injection
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