nerve fiber

noun

: any of the processes (such as axons or dendrites) of a neuron

Examples of nerve fiber in a Sentence

Recent Examples on the Web

Nuts and fatty fishes, like salmon and sardines, contain omega-3 fatty acids, which are important for building the insulating sheaths that surround the nerve fibers that carry information from one brain cell to another. —Dana G. Smith, New York Times, 6 Jan. 2026

After a spinal cord injury, the body sends out signals that tell nerve fibers to stop growing. —Angelica Stabile, FOXNews.com, 3 Oct. 2025

Glutamate triggers a bunch of positive ions to flood into a neuron, increasing its internal voltage and spurring it to fire an action potential, a strong burst of electricity that travels down a nerve fiber and makes the neuron release its own set of molecules to communicate with others, and so on. —Yasemin Saplakoglu, Quanta Magazine, 29 Sep. 2025

Damage to the cord often leads to cell death and prevents nerve fibers from reconnecting. —Aamir Khollam, Interesting Engineering, 5 Sep. 2025

Word History

First Known Use

circa 1847, in the meaning defined above

Rhymes for nerve fiber

• cyber
• fibre
• prescriber
• subscriber
• transcriber

Kids Definition

nerve fiber

noun

: any of the long thin parts that lead to or away from the cell body of a neuron and include axons and dendrites

Medical Definition

nerve fiber

noun

: any of the processes (as an axon or a dendrite) of a neuron