- pandemoniumA loud, wild, tumultuous protest, disorder, or chaotic situation, usually of a crowd, often violent.
- panopticonA kind of projector in the 18th and 19th centuries.
- pantechniconA building or place housing shops or stalls where all sorts of (especially exotic) manufactured articles are collected for sale.
- panthodicOf nervous impulses: radiating to all parts of the body.