Search Dictionary
Definition of rotor

rotor

/ˈroʊ.tɚ/
ro · tor

Plural:rotors
JUMP TO:

rotor Lexical Profile

rotor Game Scores & Validity

• noun

1

A rotating assembly of airfoils or blades that provides lift or traction, notably serving as the main rotating structure of a helicopter.

Example

"The helicopter hovered smoothly above the building, its massive main rotor slicing quickly through the air."


2

The rotating part of a machine or electrical device, such as an electric motor, generator, alternator, or turbine.

Example

"If the electric motor fails to start, the rotor may be jammed or the bearings might need lubrication."


3

A localized region of intensely turbulent and violently rotating air, often forming on the leeward side of a mountain ridge.

Example

"Pilots are advised to avoid the lee side of the mountain range to stay clear of the dangerous rotors that form in the turbulent air."

Synonyms
View all synonyms for rotor

• Rhymes for rotor

Word Origin & Etymology

Coined in the early 1920s as a shortened (syncopated) form of 'rotator', originating from the Latin verb 'rotare', meaning to revolve or turn.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Rotor. In Wordmom Dictionary. Retrieved Oct 19, 2026, from https://wordmom.com/dictionary/rotor
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Dictionary & Reference
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.