| OCa | ovarian carcinoma |
|---|---|
| OSCC | oral squamous cell carcinoma |
| PACT | papillary carcinoma of thyroid; precordial acceleration tracing; prepaid accountable care term |
| PC | avoirdupois weight [Lat. pondus civile]; packed cells; paper chromatography; paracortex; parent cell... |
| PCA | para-chloramphetamine; parietal cell antibody; passive cutaneous anaphylaxis; patient care assistant... |