| Abbreviations | Meaning |
 | GIS | Gas In Stomach; Gastrointestinal Series; Geographic Information System; Guaranteed Income Supplement |
| MMIHS | Megacystis-microcolon-intestinal Hypoperistalsis Syndrome |
| UG | Urogastrone |
| CSB | Contaminated Small Bowel; Craniosynostosis, Boston Type |
| NBM | No Bowel Movement; Normal Bone Marrow; Normal Bowel Movement; Nothing By Mouth |
| BCOC | Bowel Care Of Choice |
| BSA | Bowel Sounds Active |
| OG | Obstetrics And Gynecology; Occlusogingival; 1-O-octyl-beta-D-glucopyranoside; Oligodendrocyte; Optic Ganglion; Orange Green; Orogastric; [protective] Overgarment |
| EGF-URO | Epidermal Growth Factor, Urogastrone |
| LI | Large Intestine |
| SIM | Specialized Intestinal Metaplasia |
| OGD | [o]esophago-gastro-duodenoscopy |
| CIPSO | Chronic Intestinal Pseudo-obstruction |
| HHG | Hypertrophic Hypersecretory Gastropathy; Hypogonadotropic Hypogonadism |
| GASTROC | Gastrocnemius [muscle] |
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