Search the Dictionary

To deprive of nerve, force, or strength; to weaken; to enfeeble; as, to unnerve the arm. Unequal match'd, . . . The unnerved father falls. Shak.

One who, or that which, accelerates. Also as an adj.; as, accelerator nerves.

Conveying sensory or afferent impulses; -- said of nerves.

ucting inwards to a part or organ; -- opposed to efferent; as, afferent vessels; afferent nerves, which convey sensations from the external organs to the brain.

Paralysis of the motor nerves; loss of movement. Foster.

A loss or decay of sight, from loss of power in the optic nerve, without any perceptible external change in the eye; -- called also gutta serena, the "drop serene" of Milton.

One of the radical zones of echinoderms, along which run the principal nerves, blood vessels, and water tubes. These zones usually bear rows of locomotive suckers or tentacles, which protrude from regular pores. In star fishes they occupy the grooves along the under side of the rays.

f Mollusca remarkable for the bilateral symmetry of the organs and the arrangement of the nerves.

The inosculation of vessels, or intercommunication between two or more vessels or nerves, as the cross communication between arteries or veins.

The condition of decreased irritability of a nerve in the region of the positive electrode or anode on the passage of a current of electricity through it. Foster.

Having no radiating processes; -- applied particularly to certain nerve cells.

The treelike disposition of the gray and white nerve tissues in the cerebellum, as seen in a vertical section.

A group of Annelida remarkable for having no external segments or distinct ventral nerve ganglions.

Liable to be affected by sympathy with other parts; -- said of organs, nerves, muscles, etc. The stomach, the most associable of all the organs of the animal body. Med. Rep.

An instrument which, placed against the teeth, conveys sound to the auditory nerve and enables the deaf to hear more or less distinctly; a dentiphone.

Of or pertaining to hearing, or to the sense or organs of hearing; as, the auditory nerve. See Ear. Auditory canal (Anat.), the tube from the auditory meatus or opening of the ear to the tympanic membrane.

Of or pertaining to the ear, or to the sense of hearing; as, auricular nerves.

Being without veins or nerves, as the leaves of certain plants.

Of or pertaining to the axilla or armpit; as, axillary gland, artery, nerve.

rm a valley. -- Axis cylinder (Anat.), the neuraxis or essential, central substance of a nerve fiber; -- called also axis band, axial fiber, and cylinder axis. -- Axis in peritrochio, the wheel and axle, one of the mechanical powers. -- Axis of a curve (Geom.), a straight line which bisects a system of parallel chor…