Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

dynamo

noun
 
 
/ˈdaɪ.nə.məʊ/ US  /-moʊ/ (plural dynamos)

Definition

[C] a device that changes energy of movement into electrical energy: A dynamo on a bicycle will power a pair of lights while the wheels are going round.Generating and pumping devices [C usually singular] an energetic force: Onstage she is a human dynamo, spending the hour in perpetual motion.Energy, force and powerPower and intensity
(Definition of dynamo noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of dynamo