- One of the microtubules, about 24 nm in diameter, occurring in the cell body, dendrites, axon, and some synaptic endings of neurons.
* * *neu·ro·tu·bule .n(y)u̇r-ō-'t(y)ü-(.)byü(ə)l n one of the tubular elements sometimes considered to be a fundamental part of the nerve-cell axon
* * *neu·ro·tu·bule (noor″o-tooґbūl) a microtubule occurring in a neuron.
Medical dictionary. 2011.