Engineering English
Impeller
Mechanical Engineering · Last updated: July 30, 2026 · How this entry was written
Definition: The rotating component of a pump, compressor, or fan that transfers energy from the motor to the fluid by accelerating it outward radially or axially.
Example in context
“The pump's impeller was designed with backward-curved vanes to improve efficiency and reduce cavitation risk.”
“Pompa çarkı, verimliliği artırmak ve kavitasyon riskini azaltmak için geriye eğimli kanatlarla tasarlandı.”
Where engineers use it
Impellers are central to pump and fan performance; engineers select impeller type based on specific speed and fluid characteristics to optimize head and flow.
Synonyms: runner, rotor
Antonyms: stator
Practice: can you use “Impeller” at work?
You are troubleshooting a centrifugal pump with reduced flow. Describe how you would inspect the impeller and what signs of wear to look for.
Show a model answer
“Check the impeller for erosion after prolonged operation with abrasive fluids.”
“Impeller” in 21 languages
| English | Impeller |
|---|---|
| Turkish | Çark |
| French | Roue |
| German | Laufrad |
| Spanish | Impulsor |
| Chinese | 叶轮 |
| Arabic | دفاعة |
| Portuguese | Impulsor |
| Russian | Рабочее колесо |
| Japanese | インペラ |
| Italian | Girante |
| Vietnamese | Cánh quạt |
| Hindi | इम्पेलर |
| Thai | ใบพัด |
| Indonesian | Impeler |
| Korean | 임펠러 |
| Bengali | ইম্পেলার |
| Dutch | Waaier |
| Swedish | Löphjul |
| Finnish | Juoksupyörä |
| Ukrainian | Робоче колесо |
Frequently asked questions
What does Impeller mean in engineering?
The rotating component of a pump, compressor, or fan that transfers energy from the motor to the fluid by accelerating it outward radially or axially. In Mechanical Engineering, the term carries a usage-frequency rating of 10/10 in the Engineering English library.
How do you pronounce Impeller?
Impeller is pronounced /ɪmˈpɛlər/ (IPA). The Engineering English app plays audio for the term and checks your pronunciation with speech recognition.
How is Impeller used in a sentence?
Example from an engineering context: “The pump's impeller was designed with backward-curved vanes to improve efficiency and reduce cavitation risk.”
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