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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.

It pumped out nearly 20 million tonnes of planet-heating carbon dioxide in 2022, making it the world's highest-emitting oil refinery, according to non-profit Climate Trace.

From Barron's • May 28, 2026

These materials are made from metal atoms connected by organic molecules and are valued for their ability to trap gases such as carbon dioxide and hydrogen, and even capture water.

From Science Daily • May 22, 2026

HFCs are known as “super pollutants” because their impacts on climate change can be hundreds of thousands of times greater than carbon dioxide during their shorter lifespans.

From Los Angeles Times • May 21, 2026

The nagatitan roamed Earth when the planet's atmospheric carbon dioxide levels were rising in line with high global temperatures.

From BBC • May 14, 2026

Plants take the carbon out of carbon dioxide and use it to make food—carbohydrates.

From "The Omnivore's Dilemma" by Michael Pollan




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