WYSIWYG stands for "What You See Is What You Get." It refers to a type of user interface that allows users to see how their content will look while they are editing it. This is commonly used in software applications like word processors and website builders, where the final output closely resembles the editing view. In a WYSIWYG editor, changes made to text, images, or layouts are immediately visible, making it easier for users to create and format documents or web pages without needing to understand complex coding languages like HTML or CSS. This approach simplifies the design process for many users.