The term 'nerve transmitter' can be broken down into two parts: axon (4 letters) and neurotransmitter. An axon is a long, thin fiber that carries electrical signals away from the cell body of a neuron. Neurotransmitters are chemicals that are released by neurons to transmit signals to other neurons. Together, axons and neurotransmitters form the basis of nerve transmission, which is the process by which information is sent from one neuron to another.