A bipolar cell is a type of neuron which has two extensions. Bipolar cells are specialized sensory neurons for the transmission of special senses. As such, they are part of the sensory pathways for smell, sight, taste, hearing and vestibular functions. Common examples are the bipolar cell of the retina, the ganglia of the vestibulocochlear nerve, ... Found on http://en.wikipedia.org/wiki/Bipolar_neuron
a neuron having two processes, one projecting from each end of the cell body; these may be either one axon and one dendrite or two dendrites. Found on http://www.encyclo.co.uk/local/21001