rotor

See also: Rotor and rötor

English

Etymology

From an irregular shortening of rotator.

Pronunciation

• (UK) IPA^(key): /ˈɹəʊ.tə/

• Audio (UK)

  (file)

• (US) IPA^(key): /ˈɹoʊ.tɚ/
• Homophone: rota (non-rhotic accents)

Noun

rotor (plural rotors)

1. 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.

2. The wing of a helicopter or other rotary-wing aircraft.
3. (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^[1], archived from the original on 22 January 2021, retrieved 29 January 2021, page 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.

4. A quantity having magnitude, direction, and position.

Derived terms

• mountain rotor
• rotor cloud

Related terms

• stator

Translations

a rotating part of a mechanical device

• Arabic: عَمُود نَاقِل الْحَرَكَة‎ m (ʿamūd nāqil al-ḥaraka)
• Basque: errotore (eu)
• Chinese:

  Mandarin: 轉子 (zh), 转子 (zh) (zhuànzǐ)

• Czech: rotor (cs) m
• Finnish: roottori (fi), pyörijä
• French: rotor (fr) m
• German: Rotor (de) m
• Greek: δρομέας (el) m (droméas)
• Italian: rotore (it) m
• Japanese: ローター (rōtā), 回転子 (かいてんし, kaitenshi)
• Macedonian: ротор m (rotor)

• Norwegian: rotor m
• Polish: wirnik (pl) m, rotor (pl) m
• Portuguese: rotor m
• Romanian: rotor (ro) n
• Russian: ро́тор (ru) m (rótor)
• Serbo-Croatian:

  Cyrillic: ротор m

  Roman: rotor (sh) m

• Spanish: rotor (es) m
• Tagalog: painog
• Ukrainian: ро́тор (uk) m (rótor)

the wing of a helicopter or similar

• Chinese:

  Mandarin: 旋翼 (zh) (xuányì), 主旋翼 (zhǔ xuányì)

• Finnish: roottori (fi)
• German: Hauptrotor m
• Italian: rotore (it) m, pala (it) f

• Polish: wirnik (pl) m, śmigło (pl) n
• Portuguese: hélice (pt) f
• Romanian: elice (ro) f
• Russian: ро́тор (ru) m (rótor), несу́щий винт m (nesúščij vint)

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Czech

Etymology

From English rotor, ultimately from Latin rota.

Pronunciation

• IPA^(key): [ˈrotor]
• Rhymes: -otor

Noun

rotor m

1. rotor (rotating part of a mechanical device)

Related terms

• rotace
• rotačka
• rotoped
• rotovat
• rotunda
• runda

 

Further reading

• rotor in Příruční slovník jazyka českého, 1935–1957
• rotor in Slovník spisovného jazyka českého, 1960–1971, 1989

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Dutch

Pronunciation

• Audio

  (file)

Noun

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

1. rotor

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Latin

Verb

rotor

1. first-person singular present passive indicative of rotō

References

• rotor in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)

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Polish

Noun

rotor m inan

1. rotor (the rotating part of a mechanical device)

Declension

declension of rotor

	singular	plural
nominative	rotor	rotory
genitive	rotora	rotorów
dative	rotorowi	rotorom
accusative	rotor	rotory
instrumental	rotorem	rotorami
locative	rotorze	rotorach
vocative	rotorze	rotory

Synonyms

• wirnik

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Portuguese

Noun

rotor m (plural rotores)

1. rotor (a rotating part of a mechanical device)
2. rotor (central part of a helicopter’s wings)

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Romanian

Etymology

From French rotor.

Noun

rotor n (plural rotoare)

1. rotor

Declension

Declension of rotor

	singular		plural
	indefinite articulation	definite articulation	indefinite articulation	definite articulation
nominative/accusative	(un) rotor	rotorul	(niște) rotoare	rotoarele
genitive/dative	(unui) rotor	rotorului	(unor) rotoare	rotoarelor
vocative	rotorule		rotoarelor

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Serbo-Croatian

Pronunciation

• IPA^(key): /rôːtor/
• Hyphenation: ro‧tor

Noun

rȏtor m (Cyrillic spelling ро̑тор)

1. rotor

Declension

Declension of rotor

	singular	plural
nominative	rotor	rotori
genitive	rotora	rotora
dative	rotoru	rotorima
accusative	rotor	rotore
vocative	rotoru / rotore	rotori
locative	rotoru	rotorima
instrumental	rotorom	rotorima

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Spanish

Noun

rotor m (plural rotores)

1. rotor

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Turkish

Noun

rotor (definite accusative rotoru, plural rotorlar)

1. (aviation) rotor