English Lexicon

Leerlaufdrehzahl

/ˈleːɐˌlaʊ̯fˌdʁeːtsaːl/
nounCEFR B2 (Upper)Top #15000 frequency
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Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    The rotational speed of an engine when it is not under load.

    "The car's idle speed is set to 800 RPM for optimal performance."
  2. 2

    A measurement used to determine the efficiency of an engine at rest.

    "Monitoring the Leerlaufdrehzahl can help diagnose engine issues."

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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

The term 'Leerlaufdrehzahl' is a compound word in German, formed from 'Leerlauf' meaning 'idle' and 'Drehzahl' meaning 'speed' or 'revolutions per minute'. It originated in the automotive and engineering fields, reflecting the technical evolution of machinery and vehicles in the 20th century.

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