| OSA | obstructive sleep apnea; Office of Services to the Aging; Optical Society of America; ovarian sectio... |
|---|---|
| ANT | acoustic noise test; adenine nucleotide translocator; aminonitrothiazole; anterior |
| APN | acute pyelonephritis; advanced practice nurse; average peak noise |
| BBN | broad band noise |
| C/N | carbon/nitrogen [ratio]; carrier/ noise [ratio] |