excretion - definition and synonyms

noun biology 

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/ɪkˈskriːʃ(ə)n/
singularexcretion
pluralexcretions
  1. [uncountable] the process of getting rid of waste from your body. Excretion includes the process of getting rid of carbon dioxide from your lungs, sweat from your sweat glands, and urea from your body in urine.
    1. a.
      [countable] waste that you get rid of from your body
    See also egestion