What does P stand for?

Phenolic

A resin or plastic, usually thermosetting, made by condensation of a phenol with an aldehyde and used for molding, insulating, coatings and adhesives. A synthetic resin used in the manufacture of some industrial finishes. The generic name for phenolformaldehyde thermosetting plastic that's molded or cast. A type of resin made from a condensation reaction of phenols and aldehydes. Resultant films have a high degree of chemical resistance with limited flexibility properties. 

Proton

The positively charged particle in the nucleus of an atom.

The Proportion

Propagation

When a polymerization reaction begins, propagation is the continuation of that reaction.

Lightwave Plug-in

Pascal Source Code

Python Pickle File

Pallet (spacelab)

Roll Rate (angular Rate)

parturition

Parturition involves the orchestration of a complex series of physiological events that require the rotation of the foetus into the birth position, which is accompanied by a cascade of endocrine changes that terminates with a successful delivery.