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internal respiration


from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The metabolic process by which living cells absorb oxygen and release carbon dioxide.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the metabolic processes whereby certain organisms obtain energy from organic molecules; processes that take place in the cells and tissues during which energy is released and carbon dioxide is produced and absorbed by the blood to be transported to the lungs


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