Definition

Noun: 1. A component in an internal combustion engine: A sparking plug is an electrical device that is screwed into the cylinder head of an engine. Its primary function is to ignite the compressed air-fuel mixture within the combustion chamber by generating an electric spark.

Usage

The term "sparking plug" is used to refer to the specific engine part responsible for ignition. It is a countable noun. * The mechanic replaced all four sparking plugs during the service. * A faulty sparking plug can cause the engine to misfire.

Advanced Usage

• Technical Context: In automotive and mechanical engineering, "sparking plug" is a standard term for this essential engine component. The condition and gap of the plug's electrodes are critical for efficient engine operation.
  • The technician checked the electrode gap on each sparking plug.

Variants and Related Words

• Spark Plug: This is the more common and modern term for "sparking plug." The two terms are synonymous.
  • I need to buy a new set of spark plugs for my car.

Synonyms

• Igniter: A general device for igniting a fuel charge.
• Ignition plug: Another technical term with the same meaning.

Related Phrases

• To change the spark(ing) plugs: A common maintenance task.
  • It's time to change the sparking plugs.
• Fouled spark(ing) plug: A plug that has become coated with deposits, preventing proper sparking.
  • The engine's rough idle was due to a fouled sparking plug.

Noun

1. electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark