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symmetallism
symmetric matrix
symmetrical
symmetrize
symmetry
sympathectomy
sympathetic
sympathetic magic
sympathetic nervous system
sympathetic string
sympathize
sympatholytic
sympathomimetic
sympathy
sympathy strike
sympathy vote
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sympathetic nervous system

sym·pa·thet·ic nerv·ous sys·tem (plural sym·pa·thet·ic nerv·ous sys·tems)


noun 
Definition:
 
nerve cells involved in stress response: the part of the autonomic nervous system that is active during stress or danger and is involved in regulating pulse and blood pressure, dilating pupils, and changing muscle tone

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