| HELLIS | Health, Literature, Library and Information Services |
|---|---|
| CPS | carbamoylphosphate synthetase; cardioplegic perfusion solution; centipoise; cervical pain syndrome; ... |
| PES | Patient Escort Service; photoelectron spectroscopy; physicians' equity services; polyethylene sulfon... |
| CFSTI | Clearinghouse for Federal Scientific and Technical Information |
| COSATI | Committee on Scientific and Technical Information |