noun Date: 1850 the part of the autonomic nervous system that contains chiefly adrenergic fibers and tends to depress secretion, decrease the tone and contractility of smooth muscle, and increase heart rate
SYMPATHETIC NERVOUS SYSTEM
Meaning of SYMPATHETIC NERVOUS SYSTEM in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012