Definition of metabolism noun from the Oxford Advanced Learner's Dictionary

 

metabolism

 noun
noun
BrE BrE//məˈtæbəlɪzəm//
 
; NAmE NAmE//məˈtæbəlɪzəm//
 
[uncountable, singular](biology)
 
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the chemical processes in living things that change food, etc. into energy and materials for growth The body's metabolism is slowed down by extreme cold. Word Origin late 19th cent.: from Greek metabolē ‘change’ (from metaballein ‘to change’) + -ism.
See the Oxford Advanced American Dictionary entry: metabolism