noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Any of a group of microscopic fibrils through the body of a neuron that extend into the axon and dendrites
2. 2
   Any of the long, thin, microscopic fibrils that run through the body of a neuron and extend into the axon and dendrites, giving the neuron support and shape. wordnet

Etymology

From neuro- + fibril.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.