Dot is a small, round mark or point often used in writing and design. It can represent a variety of things, such as a period at the end of a sentence or a bullet point in a list. Dots are also used in digital displays and graphics to create images and patterns. In technology, the term "dot" can refer to the dot notation, which is a way to access properties or methods in programming languages like JavaScript and Python. Additionally, the dot-com bubble refers to the rapid rise and fall of internet-based companies in the late 1990s and early 2000s.