steam-engine

A steam-engine pulls a long train across the countryside.

Definition

1. Noun:
   • A machine powered by steam: "steam-engine" refers to an engine that uses the expansion or condensation of steam to generate mechanical power, typically by moving a piston within a cylinder.
   • A historical power source: It specifically denotes the type of engine that was central to the Industrial Revolution, used in locomotives, ships, and factories.

Usage Examples

• Noun:
  • The steam-engine revolutionized transportation in the 19th century. (This machine used steam power to drive trains and ships.)
  • We visited a museum that displayed an old steam-engine used in a textile mill. (A historical machine that ran on steam.)
  • The steam-engine requires a boiler to heat water and produce steam. (The essential component for generating the power.)

Advanced Usage

• "compound steam-engine": a type of steam-engine that expands steam in multiple stages to improve efficiency.

  • The compound steam-engine was more fuel-efficient than earlier models. (It used steam expansion in two or more cylinders.)

• "steam-engine design": the engineering principles and construction of such engines.

  • James Watt's improvements to steam-engine design made it practical for widespread use. (His modifications increased power and efficiency.)

Variants and Related Words

• Steam (n): the vapour into which water is converted when heated, used as the working fluid in a steam-engine.

  • The steam from the boiler drives the piston of the steam-engine. (The vapour provides the pressure.)

• Engine (n): a machine with moving parts that converts power into motion.

  • The steam-engine is a type of external combustion engine. (It burns fuel outside the engine to heat water.)

• Steam-powered (adj): operated by means of a steam-engine.

  • The steam-powered locomotive pulled the train across the country. (It used steam-engine technology.)

Synonyms

• Steam locomotive: a specific type of steam-engine used for railways.
• Heat engine: a broader category that includes steam-engines, but not all heat engines are steam-engines.
• External combustion engine: a technical term for engines where fuel is burned outside the engine, as in a steam-engine.

Related Idioms

• To run out of steam: to lose energy or momentum, metaphorically based on a steam-engine losing power.

  • The project ran out of steam after the initial enthusiasm faded. (It lost momentum, like a steam-engine with no more steam.)

• To let off steam: to release pent-up energy or emotion, derived from the steam-engine releasing excess pressure.

  • He went for a run to let off steam after a stressful day. (He released emotional energy, like a steam-engine releases steam.)