dioxide
Pronunciation: [daɪˈɒksaɪd]
Word
Context: “science”
(noun) a chemical compound that has two oxygen atoms and one other element. It's like the air we breathe, but instead of just oxygen, there are two oxygen atoms linked to something else, like carbon.
Example
Carbon dioxide is released when you breathe out.
Example
Not all gases are dioxide; for example, nitrogen does not have two oxygen atoms.
Example
What happens to carbon dioxide levels when we breathe in?
Context: “environment”
(noun) a gas that is important for plants and is produced by animals and people when they breathe. Plants need this gas to help them create oxygen through a process called photosynthesis.
Example
Plants absorb carbon dioxide from the air and use it to grow.
Example
Too much carbon dioxide in the atmosphere can lead to global warming.
Example
Why do plants need carbon dioxide to survive?
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