A "quadrant" is a term used in mathematics and geometry to describe one of the four sections created when a plane is divided by two perpendicular lines, typically the x-axis and y-axis. Each quadrant is identified by a specific combination of positive and negative values for the coordinates. For example, the first quadrant contains points where both x and y values are positive. In a broader context, the term "quadrant" can also refer to any four-part division of a space or object. For instance, in a graph, the quadrants help in visualizing data points, while in anatomy, the human abdomen can be divided into four quadrants for medical assessment.