| Abbreviation | Definition |
|---|---|
| GIB | Gps Intelligent Buoys |
| GID | Gender Identity Disorder |
| GIFB | GastroIntestinal Foreign Body |
| GIG | Gluten Intolerance Group |
| GII | Gastric Intestinal Infection |
| GIP | Gastric Inhibitory Peptide |
| GIT | Gastric Intestinal Tract |
| GITS | Gastro Intestinal Therapeutic System |
| GL | Gingus Lupine |
| GL | Glycemic Load |
| GLBP | Gestational Low Back Pain |
| GLPP | Great Lakes Physician Practice |
| GLTA | Gonioscopic Laser Trabecular Ablation |
| GLUC | Gluconate |
| GLUT | Glucose Transporter |
| GM | ganulocyte-monocyte progenitors |
| GM | Grand Mal epilepsy |
| GM | Gross motor |
| GMA | Gross Motor Activity |
| GM-CSF | granulocyte-macrophage colony-stimulating factor |