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Definitions

carbon dioxide

[kahr-buhn dahy-ok-sahyd] / ˈkɑr bən daɪˈɒk saɪd /
NOUN
colorless odorless gas
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A government source told the BBC it was planning for a worst case scenario, which would involve the continued closure of the strait and breakdowns in the domestic supply of carbon dioxide.

From BBC • Apr. 16, 2026

Catalytic converters turn toxic gases into water vapor and carbon dioxide, making car exhaust fumes less environmentally damaging.

From Los Angeles Times • Apr. 3, 2026

Under the EU’s emissions-trading system, or ETS, companies whose operations emit climate-changing carbon dioxide must pay for a permit for each metric ton they emit.

From The Wall Street Journal • Apr. 1, 2026

However the increase in concentrations of heat-trapping greenhouse gases -- carbon dioxide, methane and nitrous oxide -- "to their highest level in at least 800,000 years" has "upset this equilibrium", the WMO said.

From Barron's • Mar. 23, 2026

Consequently, the carbon dioxide content of the Earth’s atmosphere is increasing dramatically.

From "Cosmos" by Carl Sagan