Definition of dynamo in English:
noun (plural dynamos)chiefly British
1A machine for converting mechanical energy into electrical energy, typically by means of rotating coils of copper wire in a magnetic field.
- A dynamo converts mechanical energy from a moving electrical conductor into electromagnetic energy and thus generates current.
- Arguably the autocar laid the foundations for many of today's trains - using a petrol engine to drive a dynamo to power electric motors.
- When he walks, the rotor of the dynamo rotates generating electricity and rechargeable batteries could be charged.
1.1 informal An extremely energetic person: she was a dynamo in London politics
More example sentences
- The four organizers of Expozine are dynamos of productivity.
- She was always a little dynamo, more than willing to jump in and lend a hand, always had a smile on her face.
- She is an intellectual dynamo and long-time friend.
late 19th century: abbreviation of dynamo-electric machine, from Greek dunamis 'power'.
Definition of dynamo in:
- US English dictionary
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.
Most popular in the US
Most popular in the UK
Most popular in Australia
Most popular in Malaysia