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

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

This energy ablates sympathetic nerve fibers without compromising arterial integrity, reducing nerve activity and allowing the body to naturally regulate blood pressure. —Memorialcare, Oc Register, 16 Feb. 2026

Gray matter consists of regions of nerve cell bodies and branching nerve fibers called dendrites, as well as points of connection between nerve cells. —Christopher M. Filley, The Conversation, 3 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