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Nervous system   /nˈərvəs sˈɪstəm/   Listen
adjective
Nervous  adj.  
1.
Possessing nerve; sinewy; strong; vigorous. "Nervous arms."
2.
Possessing or manifesting vigor of mind; characterized by strength in sentiment or style; forcible; spirited; as, a nervous writer.
3.
Of or pertaining to the nerves; seated in the nerves; as, nervous excitement; a nervous fever.
4.
Having the nerves weak, diseased, or easily excited; subject to, or suffering from, undue excitement of the nerves; easily agitated or annoyed. "Poor, weak, nervous creatures."
5.
Sensitive; excitable; timid.
6.
Apprehensive; as, a child nervous about his mother's reaction to his bad report card. "Our aristocratic class does not firmly protest against the unfair treatment of Irish Catholics, because it is nervous about the land."
Nervous fever (Med.), a low form of fever characterized by great disturbance of the nervous system, as evinced by delirium, or stupor, disordered sensibility, etc.
Nervous system (Anat.), the specialized coordinating apparatus which endows animals with sensation and volition. In vertebrates it is often divided into three systems: the central, brain and spinal cord; the peripheral, cranial and spinal nerves; and the sympathetic. See Brain, Nerve, Spinal cord, under Spinal, and Sympathetic system, under Sympathetic.
Nervous temperament, a condition of body characterized by a general predominance of mental manifestations.





Collaborative International Dictionary of English 0.48


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"Nervous system" Quotes from Famous Books



... an earlier tea this evening than usual, for we have a literary friend who comes about this time of the week, and he must go home to retire about eight o'clock. His nervous system is so weak that he must get three or four hours sleep before midnight; otherwise he is next day so cross and censorious he scalps every author he can lay his hand on. As he put his hand on the table with an indelible blot of ink on his thumb ...
— Around The Tea-Table • T. De Witt Talmage
... Brain and Nervous System.—The erectile tissue surrounding the spinal cord and origin of the spinal nerves in the Cetacea did not extend into the interior of the cranium. The entire encephalic mass weighed 2-1/2 lbs.: cerebrum, 2 lbs.; cerebellum, 1/4; pons and medulla, 1/4 2-1/2. Compared ...
— Journal of the Proceedings of the Linnean Society - Vol. 3 - Zoology • Various
... metabolism, and hence to lessen the production of heat. Both katabolic and anabolic changes share in the depression, and though less energy is used up, still less energy is generated. This diminished metabolism tells first on the central nervous system, especially the brain and those parts concerned in consciousness. Both heart-beat and respiration-number become diminished, drowsiness supervenes, becoming steadily deeper until it passes into the sleep of death. Occasionally, however, convulsions ...
— Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1 • Various
... would by no means offer a complete explanation. There are many men of equal bodily and mental vigor who have not achieved a tithe of his accomplishment. What other factors are there to be taken into consideration to explain this phenomenon? First, a stolid, almost phlegmatic, nervous system which takes absolutely no notice of ennui—a system like that of a Chinese ivory-carver who works day after day and month after month on a piece of material no larger than your hand. No better illustration of this characteristic can be found than in the development of the nickel pocket for the ...
— Edison, His Life and Inventions • Frank Lewis Dyer and Thomas Commerford Martin
... the whole nervous system is torpid, or paralysed, as in the sleep of frozen people; and that the stomach is torpid in consequence of the inactivity or quiescence of the brain; and that all other parts of the body, and the cutaneous capillaries with the rest, labour under a ...
— Zoonomia, Vol. II - Or, the Laws of Organic Life • Erasmus Darwin


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