| Combining form | Meaning |
| OSM- | |
| ESOPHAG- | |
| SPHINCTER- | |
| CARDI- | |
| PEPS-,PEPT- | |
| GEUS(T)- | |
| ZYM- | |
| OSPHR- | |
| PYL(E)- | |
| COPR- | |
| SIGM- | |
| PROCT- | |
| PYLOR- | |
| GINGIV- | |
| SPLANCHN- | |
| SIAL- | |
| | Combining form | Meaning |
| JEJUN- | |
| -DOCH- | |
| RECT- | |
| CEC- | |
| DUODEN- | |
| SCAT- | |
| LIEN- | |
| ILE- | |
| GLOSS- | |
| TYPHL- | |
| LINGU- | |
| CREAT- | |
| FEC- | |
| CLY(S)- | |
| BILI- | |
|