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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.

Not only do they store up to five times more carbon dioxide than land-based forests, but their tangled roots can also slow down waves and protect coastal communities from storm surges and tsunamis.

From BBC • Jun. 4, 2026

The comet releases exceptionally large amounts of carbon dioxide relative to water, far exceeding the levels commonly measured in solar system comets.

From Science Daily • Jun. 4, 2026

Perhaps the best-known examples of fermentation are in baking and brewing, where yeast breaks down sugar into ethanol and carbon dioxide.

From BBC • Jun. 4, 2026

In other words, less carbon dioxide release may sometimes signal a loss of ecosystem resilience rather than an environmental benefit.

From Science Daily • Jun. 2, 2026

“And it’s all because of climate change. Burning fossil fuels puts carbon dioxide in the atmosphere, which traps the earth’s heat.”

From "Two Degrees" by Alan Gratz




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