一酸化炭素(いっさんかたんそ)

いっさんかたんそ
noun
carbon monoxide; CO
academicscience
1. carbon monoxide; CO
The chemical compound CO, an odorless and colorless toxic gas produced by incomplete combustion. A common cause of poisoning from poorly ventilated heaters, charcoal grills, and engine exhaust.
一酸化炭素(いっさんかたんそ)は有毒(ゆうどく)だ。
Carbon monoxide is toxic.
換気(かんき)しないと一酸化炭素(いっさんかたんそ)中毒(ちゅうどく)になる恐(おそ)れがある。
Without ventilation, there's a risk of carbon monoxide poisoning.
灯油(とうゆ)ストーブを使(つか)うときは、一酸化炭素(いっさんかたんそ)が発生(はっせい)しないよう定期的(ていきてき)に換気(かんき)しよう。
When using a kerosene heater, ventilate regularly to prevent carbon monoxide from building up.

Composed of 一酸化(いっさんか) (mono-oxide) + 炭素(たんそ) (carbon). Distinct from 二酸化炭素(にさんかたんそ) (CO₂, carbon dioxide), which is also a combustion product but far less acutely toxic.

Common collocations

  • 一酸化炭素(いっさんかたんそ)中毒(ちゅうどく): carbon monoxide poisoning
  • 一酸化炭素(いっさんかたんそ)が発生(はっせい)する: carbon monoxide is generated
  • 一酸化炭素(いっさんかたんそ)警報器(けいほうき): CO detector

Usage

  • Odorless and colorless — undetectable without an instrument
  • Produced by incomplete combustion (poor ventilation, low oxygen)
  • Binds to hemoglobin much more strongly than oxygen, so even low concentrations can be fatal

Similar words

Related Words

Compare: 二酸化炭素(にさんかたんそ) (carbon dioxide)
Compare: 酸素(さんそ) (oxygen)
general
Added 2026.5.14 13:05 · Revised 2026.9.2 13:02
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