pascal: A unit of pressure corresponding to a force of 1 newton acting uniformly upon an area of 1 square meter. Hence 1 Pa = 1N/M2
Public address. An abbreviation.
Polyamide is a polymer containing monomers of amides joined by peptide bonds. They can occur both naturally, examples being proteins, such as wool and silk, and can be made artificially through step-growth polymerization, examples being nylons, aramids, and sodium poly(aspartate).