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External; away from the center; as, the peripheral portion of the nervous system.

lly applied to feelings, such as hunger, produced by internal disturbances. Opposed to epiperipheral.

rface, as the sensation produced by touching an object with the finger; -- opposed to entoperipheral. H. Spenser.

Having the food yolk, at the commencement of segmentation, in a peripheral position, and the cleavage process confined to the center of the egg; as, ectolecithal ova.

ves (Physiol.), those nerves which transmit impulses between nerve centers, as opposed to peripheral fibers, which convey impulses between peripheral parts and nerve centers.

rtebrates 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, and Illust. in Appendix. -- Nervous temperament, a condition of body characterize…

A portion of the mesoblast (of peripheral origin) of the developing embryo, the cells of which are especially concerned in forming the first blood and blood vessels. C. S. Minot.

See Peripheral.

eing confined to the so-called gray matter of the central portions of the cord, while the peripheral white matter is composed of nerve fibers only. The center of the cord is traversed by a slender canal connecting with the ventricles of the brain.

d. -- Indirect vision (Opt.), vision when the rays of light from an object fall upon the peripheral parts of the retina. -- Reflected vision, or Refracted vision, vision by rays reflected from mirrors, or refracted by lenses or prisms, respectively. -- Vision purple. (Physiol.) See Visual purple, under Visual.…