Translation guide
How to express the concept of 'injection' in Japanese, covering medical shots, mechanical/chemical injection, and figurative uses.
To refer to receiving or giving a medical injection, such as a vaccine or medicine.
The most common and general term for a medical injection. Can be used as a noun or with する to mean 'to give/receive an injection'.
昨日、インフルエンザの注射を打ってもらった。
Yesterday, I got a flu shot.
注射が怖い子供は多い。
Many children are afraid of injections.
Specifically refers to a vaccination or immunization shot. Used for preventive injections.
来週、子供の予防接種に行く。
Next week, I'm taking my child for a vaccination.
Refers to vaccine administration, often used in public health contexts.
ワクチン接種が進んでいる。
Vaccination is progressing.
To describe the act of forcing a liquid or gas into something, such as in engineering or cooking.
General term for injecting or pouring a liquid/gas into something. Used in technical and everyday contexts.
燃料をエンジンに注入する。
Inject fuel into the engine.
クリームをケーキに注入する。
Inject cream into the cake.
Refers to spraying or jetting a liquid/gas, often under pressure. Common in automotive and industrial contexts.
To express the idea of adding something (like funds, energy, or a new element) into a system or situation.
Also used figuratively for injecting capital, energy, or ideas. Often paired with words like 資金 (funds) or 活力 (vitality).
政府は市場に資金を注入した。
The government injected funds into the market.
新しいアイデアをプロジェクトに注入する。
Inject new ideas into the project.
Means 'to throw in' or 'to input', often used for injecting resources, effort, or money into something.
To refer to the cybersecurity attack where malicious code is inserted into a program.
Loanword from English, commonly used in IT contexts. Often combined with the type, e.g., SQLインジェクション.
SQLインジェクション対策が必要だ。
We need measures against SQL injection.
Literal translation 'code injection', sometimes used but less common than the loanword.
コード注入攻撃を防ぐ。
Prevent code injection attacks.
注射 is specifically for medical injections (shots). 注入 is for injecting liquids/gases into something, or figurative injection of resources/ideas. Using 注射 for non-medical contexts sounds odd.
In automotive contexts, 燃料噴射 (fuel injection) or 燃料注入 is used, not 注射. 注射 is only for medical syringes.
The fuel injection system broke down.
会社は新技術に多額の資金を投入した。
The company injected a large amount of money into new technology.