Nerve junction is a term used to describe the connection between two neurons, which is known as a synapse (7 letters). The synapse is composed of an axon terminal from one neuron and a dendrite from another neuron, connected by a small gap called the synaptic cleft. The neurotransmitter molecules are released from the axon terminal and bind to receptors on the dendrite, allowing for the transmission of electrical signals between the two neurons. The letter O (1 letter) is used to represent the synaptic cleft.