piston-rod

The engineer inspects the piston-rod inside the engine.

Definition

1. Noun:
   • A mechanical component: A "piston-rod" is a rod that connects a piston to a crosshead or a crankshaft in an engine or pump, transmitting the force from the piston to the mechanism.

Usage Examples

• (The rod transmitted the piston's movement.)
• (The rod is critical for mechanical function.)

Advanced Usage

• "to drive the piston-rod": to cause the rod to move as part of the engine cycle.

  • The expanding steam drives the piston-rod forward. (The steam pressure moves the rod.)

• "piston-rod seal": a component that prevents leakage around the rod.

  • The piston-rod seal must be replaced regularly to maintain pressure. (The seal is crucial for efficiency.)

Variants and Related Words

• Piston (n): a disk or cylinder that moves within a cylinder, driven by fluid pressure.
  • The piston moves up and down inside the engine block. (The piston is the core moving part.)
• Rod (n): a thin, straight bar or stick.
  • The connecting rod links the piston to the crankshaft. (A rod is a basic mechanical element.)

Synonyms

• Connecting rod: a rod that connects a piston to a crankshaft (often used interchangeably in internal combustion engines).
• Piston shaft: another term for a piston-rod, though less common.

Related Idioms

• "to be on the piston-rod": not a standard idiom; this phrase is technical and literal, not figurative.
  • The technician worked directly on the piston-rod. (Literal mechanical work.)

Phrasal Verbs

• "to rod out": to clean or clear a passage using a rod (not specific to piston-rods).
  • He rod out the blocked pipe with a long steel rod. (The verb is unrelated to the piston-rod itself.)