me·tab·o·lite /-ˌlaɪt/
  因新陳代謝所生之物
  me·tab·o·lite /-ˌlaɪt/ 名詞
  代謝產物
  Me·tab·o·lite n. Physiol Chem. A product of metabolism; a substance produced by metabolic action, as urea.
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  metabolite
       n : any substance involved in metabolism (either as a product of
           metabolism or as necessary for metabolism)