| OHR | occupational health research; Office of Health Research |
|---|---|
| COD | 1) Choice Of Drug 2) Cause Of Death 3) Chemical O2 Demand;... |
| ABC | absolute basophil count; absolute bone conduction; acalculous biliary colic; acid balance control; a... |
| ACS | acrocallosal syndrome; acrocephalosyndactyly; acute chest syndrome; acute confusional state; Alcon C... |
| BCW | biological and chemical warfare |