| ORS | olfactory reference syndrome; oral rehydration solution; oral surgery, oral surgeon; Orthopaedic Res... |
|---|---|
| EE | embryo extract; end-to-end; end expiration; energy expenditure; Enterobacteriaceae enrichment [broth... |
| MEC | median effective concentration; middle ear canal; middle ear cell; minimum effective concentration |
| OCP | octacalcium phosphate; ocular cicatricial pemphigoid; oral case presentation; oral contraceptive pil... |
| OET | oral endotracheal tube; oral esophageal tube |