| HOS | health opinion survey; Holt-Oram syndrome; human osteosarcoma; hypoosmotic swelling [test] |
|---|---|
| OS | left eye [Lat. oculus sinister]; occipitosacral; occupational safety; office surgery; Omenn syndrome... |
| POS | periosteal osteosarcoma; physician order set; point of service; polycystic ovary syndrome; psychoorg... |
| ESA | Electrolysis Society of America; endocardial surface area; epidermal surface antigen; esterase; este... |
| SA | salicylic acid; saline [solution]; salt added; sarcoidosis; sarcoma; scalenus anticus; secondary ame... |