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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.

The research shows that forests across the continent, long known for pulling carbon dioxide out of the atmosphere, have reversed course and are now contributing to emissions.

From Science Daily • Apr. 13, 2026

One of the most abundant organisms on Earth, algae captures carbon dioxide through photosynthesis and yields oil that theoretically could be used to make transportation fuel.

From The Wall Street Journal • Mar. 31, 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

Cornell University researchers last year estimated that AI growth could add 24 to 44 million metric tons of carbon dioxide to the atmosphere annually by 2030, unless steps are taken to change course.

From Los Angeles Times • Mar. 23, 2026

Like Venus, the Earth also has a greenhouse effect due to its carbon dioxide and water vapor.

From "Cosmos" by Carl Sagan