Definition of "excretions" [excretions]

• Plural form of excretion. (noun)

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• "The worn-out substances themselves are called excretions, as opposed to secretions, which are elaborated for use in the body."
• "The excretions are the urine, the perspired fluid, and the milk."
• "You are correct of course it would be very difficult to verify experimentally due to the numerous inputs and outlets of energy in the human body and the difficult of controlling (i.e., locking up) humans in a laboratory in a closed chamber necessary to measure and test all those inputs and excretions (the gases, solids, liquids, heat, energy storage molecules, etc.) over an extened period oftime."