| A | B |
| Occluded | closed or obstructed |
| Ongoing | continuous |
| Oral | given by or affecting the mouth |
| Otic | of the ear |
| Parameter | a characteristic or constant factor,= |
| Patent | open |
| Pathogenic | causing or able to cause disease |
| Pathology | cause and effects of disease, abnormality |
| Posterior | located behind, near the back |
| Potent | producing a strong effect |
| Potential | preventative measure |
| Precipitous | rapid |
| Predispose | to make susceptible or more likely to occur |
| Preexisitng | already present |
| Primary | first or most significant |
| Priority | of great importance |
| Prognosis | expected course of outcome |
| Rationale | underlying reason |
| Recur | to occur again |
| Renal | of or relating to the kidneys |
| Respiration | inhalation and exhalation |
| Restrict | to limit |
| Retain | to hold or keep |
| Serene | calm, tranaquil |
| Status | condition |
| Sublingual | under the tongue |
| Supplement | to take in addition to |
| Suppress | to stop or subdue |
| Symmetric | being equal or the same in size and shape |
| Symptom | indication of a problem |
| Syndrome | group of symptoms when occurring together identify a specific disease or disorder |
| Therapeutic | of or relating to the treatment of a disease or disorder |
| Toxic | Causing harm, poisonous |
| Transdermal | crossing through the skin |
| Transmission | transfer of disease from one person to another |
| Trauma | triage |
| Ubiquitous | being or seeming to be everywhere at once |
| Urinate | expel urine |