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Definition of: metabolism
(mə·tab′ə·liz′əm) noun Biol.
The aggregate of all physical and chemical processes constantly taking place in living organisms, including those which use energy to build up assimilated materials (anabolism) and those which release energy by breaking them down (catabolism). Also me·tab′o·ly (·ə·lē). [<Gk. metabolē <meta- beyond + ballein throw]
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