Dynamic HTML (DHTML) is a term that represents a combination of HTML, Cascading Style Sheets (CSS), and JavaScript, which allows web pages to be more interactive and dynamic. DHTML enables web pages to change and update content without having to reload the entire page. Common features of DHTML include animations, interactive menus, forms that respond to user inputs, and content that updates in response to user actions. It was more commonly used in the early days of the web, but many of its functionalities have since been integrated into more standardized web technologies.