Noun gastrointestinal system has 1 sense
  1. digestive system, gastrointestinal system, systema alimentarium, systema digestorium - the system that makes food absorbable into the body
    --1 is a kind of system
    --1 is a part of body, organic structure, physical structure
    --1 has parts:
     liver; pancreas; digestive juice, digestive fluid; alimentary canal, alimentary tract, digestive tube, digestive tract, gastrointestinal tract, GI tract; digestive gland; salivary gland
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