15 letters · 29 points in Scrabble
noun originates in the brain stem and lower part of the spinal cord; opposes physiological effects of the sympathetic nervous system: stimulates digestive secretions; slows the heart; constricts the pupils
adjective of or relating to the parasympathetic nervous system
originFrom para- (“beside, adjacent to”) + sympathetic, because some of these nerves run alongside sympathetic nerves.
Etymology from Wiktionary, CC BY-SA 3.0