Source : Webster's Revised Unabridged Dictionary (1913)

Neuron \Neu"ron\, n.; pl. {Neura}. [NL., from Gr. ney^ron
   nerve.] (Anat.)
   The brain and spinal cord; the cerebro-spinal axis;
   myelencephalon.

Source : WordNet®

neuron
     n : a cell that is specialized to conduct nerve impulses [syn: {nerve
         cell}]

Source : Free On-Line Dictionary of Computing

neuron
     
        {artificial neural network}