dynamo
UK: ˈdaɪnəməʊ | US: ˈdaɪnəmoʊ
n. a machine that converts mechanical energy into electrical energy; a generator
n. (informal) an energetic or forceful person
dynamo = dynam<power> + o<noun suffix>
- dynam<power>: From Greek dynamis (δύναμις), meaning "power" or "force."
- o: A suffix often used in scientific or technical terms to form nouns (e.g., volcano, photo).
Etymology Origin:
The word dynamo originated in the late 19th century as a shortening of dynamo-electric machine, combining the Greek root dynamis (power) with the suffix -o. It reflects the machine’s function of generating electrical power from mechanical motion. Over time, dynamo also gained a figurative sense to describe a highly energetic person, metaphorically extending the idea of "generating power."
The old factory still uses a dynamo to produce electricity.
She’s a real dynamo, always organizing events and motivating the team.
Faraday’s early dynamo laid the foundation for modern electrical generators.
The bicycle’s dynamo powers the headlight as you pedal.
His relentless energy earned him the nickname "the office dynamo."