digestive system
US /daɪˈdʒes.tɪv ˈsɪs.təm/
UK /daɪˈdʒes.tɪv ˈsɪs.təm/

1.
the system of organs in the body that are involved in the process of digesting food
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The human digestive system is a complex network of organs.
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Eating a balanced diet is crucial for a healthy digestive system.