| OS | left eye [Lat. oculus sinister]; occipitosacral; occupational safety; office surgery; Omenn syndrome... |
|---|---|
| q.d. | quaque die; Once a Day, Every Day; 하루 한번, 매일 |
| PPD | packs per day; paraphenylenediamine; percussion and postural drainage; permanent partial disability;... |
| DOS | day of surgery; deoxystreptamine; disk operating system; Doctor of Ocular Science; Doctor of Optical... |
| SDS | same day surgery; school dental services; self-rating depression scale; sensory deprivation syndrome... |