二 酸 化 炭 素(にさんかたんそ)

にさんかたんそ

noun

carbon dioxide; CO2

See also: CO2 (abbreviation)

1. carbon dioxide (CO2)

A colorless gas produced by burning carbon and organic compounds and by respiration, and absorbed by plants in photosynthesis.

Plants absorb carbon dioxide and release oxygen.

二酸化炭素(にさんかたんそ)の排出量(はいしゅつりょう)を削減(さくげん)する目標(もくひょう)を立(た)てた。

We set a goal to reduce carbon dioxide emissions.

二酸化炭素(にさんかたんそ)濃度(のうど)が上昇(じょうしょう)している。

Carbon dioxide concentration is rising.

二酸化炭素(にさんかたんそ) is the chemical name for CO2 in Japanese.

WORD FORMATION:
二(に) (two) + 酸化(さんか) (oxide) + 炭素(たんそ) (carbon) = 二酸化炭素(にさんかたんそ) (carbon dioxide)

ABBREVIATION:
CO2 is often used in technical contexts and understood in Japanese.

COMMON COLLOCATIONS:

RELATED TERMS:

general

Added 2026.1.14 20:30 · Revised 2026.6.2 3:08

04500/04630_nisankatanso