Neuron/ˈnʊrɑːn/ Definition 1 of 1Pro Tip 1/3Technical Term Used in medical or biological contexts, not in everyday conversation. In our biology class, we discussed how neurons transmit signals. Pro Tip 2/3Types of Neurons The types 'motor', 'sensory', and 'interneuron' refer to neuron functions. Motor neurons are crucial for muscle movement. Pro Tip 3/3Metaphoric Use Sometimes used metaphorically to describe a network or complex system. The city's transportation system is like a neuron network.