PDH
PDH stands for:
- Plesiochronous digital hierarchy , an internationally standardized technique for multiplexing digital data streams
- Pyruvate dehydrogenase E1 , part of a large multienzyme complex, is involved in biochemical metabolic reactions
- Pound-Drever-Hall method , a technique for stabilizing laser frequencies
PdH stands for:
- Party of Humanists , a small German party