| C3 | third cervical nerve; third cervical vertebra; third component of complement |
|---|---|
| AI | accidental injury; accidentally incurred; adiposity index; aggregation index; allergy and immunology... |
| DI | date of injury; defective interfering [particle]; dentinogenesis imperfecta; deoxyribonucleic acid i... |
| IMPA | incisal mandibular plane angle |
| IO | incisal opening; inferior oblique; inferior olive; internal os; interorbital; intestinal obstruction... |