piston ring

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Word: Piston Ring

Definition: A piston ring is a circular piece made of metal that fits around a piston (a part of an engine) and helps to seal the space between the piston and the inside wall of the cylinder. This seal is important because it keeps gases from escaping and ensures that the engine works efficiently.

Usage Instructions:

• Noun: "Piston ring" is used as a noun in sentences. You can say something like, "The piston ring is essential for the engine's performance."

Example Sentence:

• "When the mechanic checked the engine, he found that the piston ring was damaged and needed to be replaced."

Advanced Usage:

In technical contexts, you might hear discussions about the material of piston rings (such as cast iron or steel) and their role in reducing friction and wear within an engine.

Word Variants:

• Piston (noun): The moving part inside the cylinder that compresses fuel and air.
• Ring (noun): A circular band, in this case, part of the piston assembly.

Different Meaning:

"Piston ring" has a specific meaning in engineering and automotive contexts. Outside of this context, "ring" can refer to jewelry or a circular band used for various purposes, while "piston" refers to a component in various machines, not just engines.

Synonyms:

While "piston ring" doesn't have direct synonyms, you might encounter related terms like "compression ring" or "oil ring," which are specific types of piston rings.

Idioms and Phrasal Verbs:

There are no specific idioms or phrasal verbs directly related to "piston ring." However, if you understand the phrase "ring a bell," which means something sounds familiar, it's interesting to note the use of "ring" in both cases, though they are unrelated in meaning.

Summary:

A piston ring is a crucial component in engines, helping to seal the space between the piston and cylinder wall, maintaining efficiency.

Academic

Noun

1. seal consisting of a split metal ring that seals the gap between a piston and the cylinder wall