Perceptron refers to a type of artificial neural network model, specifically a single-layer feedforward neural network. It is one of the fundamental building blocks of deep learning and machine learning algorithms. The perceptron consists of one or more input nodes, a processing unit, and an output node. It takes input values, applies weights to them, performs a weighted sum, and applies an activation function to produce an output. The perceptron model is primarily used for binary classification tasks.