noun
Uncommon
rotor
ROH-tuh
Rotor (noun) means the rotating part of a motor, generator, or similar machine. Example: “The rotor spins inside the motor's stationary casing.”
noun
1
The rotating part of a motor, generator, or similar machine.
"The rotor spins inside the motor's stationary casing."
2
The spinning blade assembly of a helicopter.
"The helicopter's rotor kicked up dust as it landed."
3
The metal disc a car's brake pads clamp onto in a disc brake.
"The mechanic replaced the worn brake rotors."
How to use rotor
Learner’s notesIn plain EnglishA spinning part of a machine — in everyday use, most often either a helicopter's blades or a car's brake disc.
Common pairings
rotor blades
brake rotor
main rotor
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Word forms
- Plural
- rotors
Fill the gap
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The _____ spins inside the motor's stationary casing.
Etymology
A shortened form of "rotator," first used in mathematics before being adopted for spinning machine parts.
Synonyms
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rotor coil
Antonyms
Related words
Rhymes for rotor
See all rhymes for rotor →Frequently asked questions
What does “rotor” mean?
The word “rotor” means the rotating part of a motor, generator, or similar machine. In plain terms, a spinning part of a machine — in everyday use, most often either a helicopter's blades or a car's brake disc.
How do you pronounce “rotor”?
“Rotor” is pronounced ROH-tuh (/ˈɹoʊ.tɚ/ in IPA).
How do you use “rotor” in a sentence?
Here is “rotor” used in a sentence: “The rotor spins inside the motor's stationary casing.”
What part of speech is “rotor”?
“Rotor” is a noun.
Is “rotor” a common word?
“Rotor” is an uncommon word in modern English.
How many meanings does “rotor” have?
“Rotor” has 3 distinct senses listed in this dictionary. The most common is: the rotating part of a motor, generator, or similar machine.
