dynamo

¹ American  

[dahy-nuh-moh] / ˈdaɪ nəˌmoʊ /

noun

plural

dynamos

1. an electric generator, especially for direct current.

2. an energetic, hardworking, forceful person.

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dynamo- ² American  

Also dynam-.

1. variant of dyna-.

   dynamometer.

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dynamo- ¹ British  

combining form

1. indicating power

   dynamoelectric

   dynamite

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dynamo ² British  

/ ˈdaɪnəˌməʊ /

noun

1. a device for converting mechanical energy into electrical energy, esp one that produces direct current Compare generator

2. informal an energetic hard-working person

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dynamo Scientific  

/ dī′nə-mō′ /

1. An electric generator, especially one that produces direct current.

2. See more at generator

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Etymology

Origin of dynamo

First recorded in 1882; short for dynamoelectric

Example Sentences

When David Ellison took the reins of Paramount Skydance just four months ago, he promised to rapidly transform the storied movie studio and television business into a tech-forward dynamo well positioned for growth.

From MarketWatch • Dec. 6, 2025

Aubrey owns Eternal, parent company of food delivery dynamo Zomato, and FSN E-Commerce Ventures, parent of beauty products site Nykaa.

From Barron's • Nov. 20, 2025

She’s excellent in the role, small and vulnerable yet tough and fierce, a pink-clad dynamo who is nevertheless beholden to others.

From The Wall Street Journal • Nov. 6, 2025

Continuing down the roster, Cronin got to Austin Reaves, the 6-5 dynamo.

From Los Angeles Times • Nov. 1, 2025

He wanted the basement free for the boilers and dynamo.

From "The Devil in the White City" by Erik Larson