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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.

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

The World Meteorological Organization says that our planet is gaining much more heat energy than it can release, driven by emissions of warming gases such as carbon dioxide.

From BBC • Mar. 23, 2026

The film lives in its details — frost creeping along the walls, carbon dioxide levels rising, improvised fixes worked out step by step — as each small success only leads to the next crisis.

From Los Angeles Times • Mar. 19, 2026

Stockholm’s public-transport operator found the P-12 halved travel time and cut carbon dioxide emissions by 94%.

From The Wall Street Journal • Mar. 18, 2026

Drenched in sweat, crewmen gasped for air as oxygen levels fell and carbon dioxide levels rose closer to the lethal zone every time someone exhaled.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin