燃焼

ねんしょう

burning, combustion

JLPT N1

Character Breakdown

Meaning and Usage

The word 燃焼 (ねんしょう) specifically refers to the process of burning or combustion, often used in scientific, technical, or engineering contexts. It describes the chemical reaction where a substance reacts with oxygen to produce heat and light.

Common Contexts

You will frequently encounter 燃焼 in discussions about engines, fuel efficiency, and energy production. It is a formal term and less common in casual conversation where simpler words like 燃える (もえる) might be used.

Collocations and Patterns

  • 燃焼効率 (ねんしょうこうりつ): combustion efficiency, used when discussing how effectively fuel burns.
  • 燃焼室 (ねんしょうしつ): combustion chamber, a technical term in engines.
  • 燃焼過程 (ねんしょうかてい): combustion process, describing the stages of burning.

Usage Notes

When using 燃焼, speakers imply a controlled or studied burning process, often in machines or scientific experiments. It is not typically used for casual references to fire or burning food. Avoid confusing 燃焼 with 燃える, which is more general and can describe any burning.

Register

This word is formal and technical, suitable for academic, scientific, or industrial contexts rather than everyday speech.

Example Sentences

このえんじんはねんしょうこうりつがひじょうにたかいです。

This engine has a very high combustion efficiency.

ねんしょうするときにはっせいするねつをりようしてはつでんします。

We generate electricity by using the heat produced during combustion.

ねんしょうしつのおんどがたかすぎるとえんじんがこしょうすることがあります。

If the temperature in the combustion chamber is too high, the engine may break down.