plural dynamos
1
: a machine that produces electricity : generator
2
informal
: someone who has a lot of energy
He's a dynamo on-screen.
a human dynamo
Cite this Entry
“Dynamo.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/dynamo. Accessed 23 Jun. 2026.
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