# rotor
## English
### Etymology

From an irregular shortening of rotator. Doublet of rota and ruote.

### Pronunciation

* (UK) IPA: /ˈɹəʊ.tə/
* Audio (Southern England):(file)
* (General American) IPA: /ˈɹoʊ.tɚ/
* (US, non-rhotic) IPA: /ˈɹoʊ.tə/
* Audio (US):(file)
* Rhymes: (UK) -əʊtə
* Homophones: rota, Rota (non-rhotic); Rhoda (non-rhotic, flapping)

### Noun

rotor (plural rotors)
* A rotating part of a mechanical device; for example, in an electric motor, generator, alternator, or pump.
** 2013 July-August, Lee S. Langston, “The Adaptable Gas Turbine”, in American Scientist:Turbines have been around for a long time—windmills and water wheels are early examples. The name comes from the Latin turbo, meaning vortex, and thus the defining property of a turbine is that a fluid or gas turns the blades of a rotor, which is attached to a shaft that can perform useful work.
* (aviation) The wing of a helicopter or other rotary-wing aircraft.
* (meteorology) A type of powerful horizontal-axis atmospheric vortex generated by the interaction of strong winds with mountainous terrain.
** 2001, National Transportation Safety Board, “1.7.1 Observations and Forecasts”, in Uncontrolled Descent and Collision With Terrain, United Airlines Flight 585, Boeing 737-200, N999UA, 4 Miles South of Colorado Springs Municipal Airport, Colorado Springs, Colorado, March 3, 1991‎, archived from the original on 22 January 2021, pages 30–31:A glider instructor, who had been in the COS area for more than 25 years, was interviewed. He stated that around 1200 on the day of the accident, he observed a rotor hit the ground with estimated wind speeds of 70 to 80 miles per hour.
* A quantity having magnitude, direction, and position.
* (cellular automata) The set of cells within an oscillator that switch between being alive and dead over the course of the oscillator's period.
** 1997 November 30, David Bell, “Day & Night - An Interesting Variant of Life (part 2/5)”, in comp.theory.cell-automata‎ (Usenet):The following figure shows examples of the most versatile class of these oscillators. The first emulates the p10 shown above; the second has period 62 and a rotor of size 10.
** 1998 March 18, Gunnar Johnsson, “Genetic aspects of the Game of Life.”, in comp.theory.cell-automata‎ (Usenet):The problem of determining the asymptotic colouring for a cyclic pattern from a given initial black and white pattern is completely solved. The analysis leads to the proposal of the distinction between primary and secondary rotor cells (i.e. a refinement of the classical stator-rotor distinction).
** 2008 June 25, Dave Greene, “Life: B37/S23 - A Chaotic Universe.”, in comp.theory.cell-automata‎ (Usenet):In B37/S23, it goes symmetrical after 10 ticks, and produces a familiar pair of B-heptominoes after 23 ticks (the next generation after this can be found in the rotor of a standard B3/S23 p46 oscillator):
* An amusement park and carnival ride consisting of a rotating cylindrical chamber in which centrifugal force adheres riders to the wall as the floor drops away, creating a sensation of defying gravity.

#### Hyponyms

* main rotor
* tail rotor
* wound rotor

#### Derived terms

* Flettner rotor
* locked rotor amp
* mountain rotor
* open rotor
* rotor brake
* rotor burst
* rotor cloud
* rotor kite
* rotor machine
* rotor sail

#### Related terms

* stator

#### Translations
## Czech
### Etymology

Derived from English rotor, ultimately from Latin rota.

### Pronunciation

* IPA: [ˈrotor]
* Rhymes: -otor

### Noun

rotor m inan
* rotor (rotating part of a mechanical device)

#### Declension

This noun needs an inflection-table template.

#### Related terms

* rotace
* rotačka
* rotoped
* rotovat
* rotunda
* runda

### Further reading

* “rotor”, in Příruční slovník jazyka českého (in Czech), 1935–1957
* “rotor”, in Slovník spisovného jazyka českého (in Czech), 1960–1971, 1989
* “rotor”, in Internetová jazyková příručka (in Czech)

## Dutch
### Etymology

Borrowed from Latin rotor.

### Pronunciation

* IPA: /ˈroː.tɔr/, /ˈroː.tər/
* Audio:(file)
* Hyphenation: ro‧tor
* Rhymes: -oːtɔr, -oːtər

### Noun

rotor m (plural rotoren or rotors, diminutive rotortje n)
* rotor

#### Derived terms

* rotoras
* rotorblad

## French
### Pronunciation

* Audio:(file)

### Noun

rotor m (plural rotors)
* rotor

### Further reading

* “rotor”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

## Latin
### Verb

rotor
* first-person singular present passive indicative of rotō

### References

* rotor in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)

## Polish
### Etymology

Borrowed from English rotor.

### Pronunciation

* IPA: /ˈrɔ.tɔr/
* Audio:(file)
* Rhymes: -ɔtɔr
* Syllabification: ro‧tor

### Noun

rotor m inan
* rotor (rotating part of a mechanical device)
    Synonym: wirnik
* rotor (propeller on a rotorcraft that provides lift)
    Synonym: wirnik
* (meteorology) rotor (type of powerful horizontal-axis atmospheric vortex generated by the interaction of strong winds with mountainous terrain)

#### Derived terms

* rotorowy

### Further reading

* rotor in Polish dictionaries at PWN

## Portuguese
### Pronunciation

* (Brazil) IPA: /ʁoˈtoʁ/ [hoˈtoh]
* (Brazil) IPA: /ʁoˈtoʁ/ [hoˈtoh]
** (São Paulo) IPA: /ʁoˈtoɾ/ [hoˈtoɾ]
** (Rio de Janeiro) IPA: /ʁoˈtoʁ/ [χoˈtoχ]
** (Southern Brazil) IPA: /ʁoˈtoɻ/ [hoˈtoɻ]
* (Portugal) IPA: /ʁuˈtoɾ/
* (Portugal) IPA: /ʁuˈtoɾ/
** (Southern Portugal) IPA: /ʁuˈto.ɾi/
* Hyphenation: ro‧tor

### Noun

rotor m (plural rotores)
* rotor (a rotating part of a mechanical device)
* rotor (central part of a helicopter’s wings)

## Romanian
### Etymology

Borrowed from French rotor.

### Noun

rotor n (plural rotoare)
* rotor

#### Declension
## Serbo-Croatian
### Pronunciation

* IPA: /rôːtor/
* Hyphenation: ro‧tor

### Noun

rȏtor m (Cyrillic spelling ро̑тор)
* rotor

#### Declension
## Spanish
### Pronunciation

* IPA: /roˈtoɾ/ [roˈt̪oɾ]
* Rhymes: -oɾ
* Syllabification: ro‧tor

### Noun

rotor m (plural rotores)
* rotor

### Further reading

* “rotor”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8, Royal Spanish Academy [Spanish: Real Academia Española], 2024 December 10

## Turkish
### Noun

rotor (definite accusative rotoru, plural rotorlar)
* (aviation) rotor