Definition of metabolism noun from the Oxford Advanced American Dictionary

 

metabolism

 noun
noun
NAmE//məˈtæbəˌlɪzəm//
 
[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.
NAmE//ˌmɛt̮əˈbɑlɪk//
 
adjective [usually before noun] a metabolic process/disorder a high/low metabolic rate
See the Oxford Advanced Learner's Dictionary entry: metabolism