放出

ほうしゅつ

release, emit

JLPT N1

Character Breakdown

Meaning and Usage

The word 放出 (ほうしゅつ) primarily means "to release" or "to emit." It is often used in formal or technical contexts, such as environmental science, industry, or describing the release of substances like gases or radiation.

Common Contexts

放出 is frequently used when talking about the emission of gases, radiation, or other substances from factories, natural sources, or devices. It can also be used metaphorically to describe releasing emotions or energy.

Collocations and Patterns

  • 放出する: to release or emit something.
  • 放出量: the amount of emission.
  • 有害物質を放出する: to emit harmful substances.

Register and Nuance

This term is formal and often appears in written or scientific language rather than casual conversation. When used metaphorically (e.g., releasing emotions), it still carries a somewhat formal tone.

Common Mistakes

Learners sometimes confuse 放出 with 放す (はなす), which means "to let go" or "to release" in a more physical or casual sense. 放出 is more about emission or discharge, often of substances or energy, rather than physically letting go of an object.

Example Sentences

こうじょうからゆうがいながすがほうしゅつされた。

Harmful gas was released from the factory.

かれはかんじょうをほうしゅつするほうほうをみつけた。

He found a way to release his emotions.

ほうしゅつりょうをせいぎょすることがかんきょうほごにじゅうようだ。

Controlling the amount of emission is important for environmental protection.