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

This sends a signal along sensory nerve fibers to the autonomic nervous system, specifically the sympathetic branch, which is the same system that regulates your heart rate, sweat response and pupil dilation. —Scott Travers, Forbes.com, 22 May 2026

That nerve fiber needs to be insulated in order to work. —Marcy Thompson, Scientific American, 16 Apr. 2026

The cells become overactive and attack myelin, a fatty substance that protects and insulates nerve fibers in the central nervous system. —Kaitlin Sullivan, NBC news, 15 Mar. 2026

Scientists have discovered that a soft, loving caress activates specific nerve fibers that light up parts of the brain associated with emotion, not just sensation. —The New York Times News Service Syndicate, San Diego Union-Tribune, 24 Feb. 2026

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