Parasympathetic Definition

Designating or of that part of the autonomic nervous system whose nerves originate in the midbrain, the hindbrain, and the sacral region of the spinal cord and whose functions include the constriction of the pupils of the eyes, the slowing of the heartbeat, and the stimulation of certain digestive glands: these nerves oppose the sympathetic nerves in the regulation of many body processes.
Webster's New World
Of, relating to, or affecting the parasympathetic nervous system.
Parasympathetic activity; parasympathetic agents.
American Heritage
The parasympathetic nervous system.
American Heritage Medicine
Any of the nerves of this system.
American Heritage Medicine

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