- PNS - peripheral nervous system
- The nervous system outside of the brain and spinal cord. The peripheral nervous system has autonomic and somatic divisions. The autonomic nervous system includes the enteric, parasympathetic, and sympathetic subdivisions. The somatic nervous system includes the cranial and spinal nerves and their ganglia and the peripheral sensory receptors.
Definition from: MeSH via Unified Medical Language System at the National Library of Medicine
See also Understanding Medical Terminology.