Editing PCS (section)

==Science and technology==
* [[Partitioning Communication System]], a high-assurance communications security technology
* [[Periphere Computer Systeme]], a German manufacturer of UNIX-based computers in the 1980s and 1990s
* [[Personal Communications Service]], a set of wireless communications capabilities
* [[Photon correlation spectroscopy]], a spectroscopic technique in chemistry and physics used to determine particle sizes in suspensions
* [[Physical coding sublayer]], an Ethernet Layer 1 (PHY) sub-layer
* [[Picture communication symbols]], drawings used to communicate with autistic people and in other alternative communication systems
* [[Plastic-clad silica fiber]], a type of optical fiber
* [[Process control system]], for industrial process control
* [[Profile connection space]], an intermediary form for color-data used when performing conversions between color spaces

===Medicine===
* [[Pelvic congestion syndrome]], a cause of chronic pain in the abdomen
* [[Post-concussion syndrome]], a set of symptoms that a person may experience after a concussion
* [[Post-COVID syndrome]], symptoms that develop and continue for a long time after COVID-19
* [[Postcholecystectomy syndrome]], the presence of abdominal symptoms after surgery to remove the gallbladder
* [[Precordial catch syndrome]], a common cause of chest pain complaints in children and adolescents