| PCW | pericanalicular web; personal care worker; primary capillary wedge; pulmonary capillary wedge; purif... |
|---|---|
| PSD | particle size distribution; peptone, starch, and dextrose; periodic synchronous discharge; phase-sen... |
| PSP | pancreatic spasmolytic peptide; paralytic shellfish poisoning; parathyroid secretory protein; period... |
| TW | tap water; terminal web; test weight; total body water; travelling wave |
| W3 | World Wide Web |