Final answer:
Nylon is not an absorbable suture material, while the other options listed are all absorbable.
Step-by-step explanation:
Of the following options, nylon is not an absorbable suture material. Nylon is a synthetic polymer that is commonly used in textiles and other applications, but it is not designed to be absorbed by the body. The other options listed, such as chromic catgut, vicryl, dexon, and poly diaxone (PDS), are all absorbable suture materials that are used in surgical procedures to close wounds. These materials are broken down and absorbed by the body over time.