nerve fiber


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

Example Sentences

Recent Examples on the Web In hopes of squelching inflammatory pain, the scientists created a novel peptide, modeling it on the chemical structure of AP2A2 but also devising a way to get it inside CGRP-containing pain neurons, which are inside nerve fiber endings. Rebecca Coffey, Forbes, 27 Oct. 2021 The nervous-immune connection is intriguing in light of recent research suggesting that chemical cross talk between gut macrophages and nerve fibers can control peristalsis, the process that moves food through the digestive tract. Esther Landhuis, Scientific American, 27 Mar. 2020 But the signals are faint, and small movements of the fine nerve fiber relative to the recording electrode can change or obscure the nerve’s subtle message. Kelly Servick, Science | AAAS, 4 Mar. 2020 The ends of the auditory nerve look like green jellyfish; the sheaths around the nerve fibers licorice red. Popular Science, 21 Jan. 2020 These drift across the synapses to nerve fibers, sparking more current. Popular Science, 21 Jan. 2020 Stick with us: The vagus is the largest and longest of the 12 nerve fibers emanating from your brain. The Editors, Outside Online, 1 Jan. 2020 Metachromatic leukodystrophy is the result of a genetic mutation, and leads to a breakdown of the protective covering around nerve cells and nerve fibers, known as myelin. Lisa Schencker,, 15 Nov. 2019 His doctors finally diagnosed him with nutritional optic neuropathy, which is dysfunction of the optic nerve when nutrients essential for nerve fiber function are in short supply. Beth Mole, Ars Technica, 4 Sep. 2019 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'nerve fiber.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

circa 1847, in the meaning defined above

Time Traveler
The first known use of nerve fiber was circa 1847

Dictionary Entries Near nerve fiber

Cite this Entry

“Nerve fiber.” Dictionary, Merriam-Webster, Accessed 30 Nov. 2022.

Kids Definition

nerve fiber


: 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


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