carbon dioxide
/ˌkɑɹ.bən daɪˈɑk.saɪd/
UK: /ˌkɑː.bən daɪˈɒk.saɪd/
kɑɹ · BƏN DAꞮⱭK · saɪd (3 syllables)
English
Noun
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Definition
The normal oxide of carbon, CO₂; a colorless, odorless gas formed during respiration and combustion and consumed by plants during photosynthesis.
Example Sentences
- "There were dozens of presentations in 2008, including: […"
- "Oxygen levels on Earth skyrocketed 2.4 billion years ago, when cyanobacteria evolved photosynthesis: the ability to convert water and carbon dioxide into carbohydrates and waste oxygen using solar energy."
- "Each year, human activities release more carbon dioxide into the atmosphere than natural processes can remove, causing the amount of carbon dioxide in the atmosphere to increase."
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