WordReference Random House Learner's Dictionary of American English © 2015
me•tab•o•lism /məˈtæbəˌlɪzəm/USA pronunciation n. 

    Physiologythe physical and chemical processes in a living body by which it is produced and maintained: [uncountable]studying the metabolism of dolphins.[countable]He has a very active metabolism.

Collins Concise English Dictionary © HarperCollins Publishers::

metabolism /mɪˈtæbəˌlɪzəm/ n
  1. the sum total of the chemical processes that occur in living organisms, resulting in growth, production of energy, elimination of waste material, etc
  2. the sum total of the chemical processes affecting a particular substance in the body: carbohydrate metabolism, iodine metabolism
Etymology: 19th Century: from Greek metabolē change, from metaballein to change, from meta- + ballein to throw

metabolic /ˌmɛtəˈbɒlɪk/ adj ˌmetaˈbolically adv

'metabolism' also found in these entries:

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