Simple Definition of carbon dioxide

from our Learner's Dictionary

carbon dioxide

noun

: a gas that is produced when people and animals breathe out or when certain fuels are burned and that is used by plants for energy

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“Carbon dioxide.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/carbon%20dioxide. Accessed 16 Apr. 2026.

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