Which term describes an element on a web page that changes when hovered over?

The term that describes an element on a web page that changes when hovered over is "rollover." This phenomenon occurs when you move the mouse pointer over a clickable element, such as a button or an image, resulting in visual feedback, like a change in color, shape, or content. Rollover effects are an important part of web design, as they enhance user interaction, helping users to understand that the element is interactive.

Hover effects can sometimes be used interchangeably with rollovers, but “rollover” specifically implies the action of changing the content or appearance of an element in response to a hover action. The other terms presented do not accurately describe this interaction: "hover" generally refers to the action itself or the state of being hovered over, "roller" is not a recognized term in web design, while "transform" is a CSS property used to apply transformations such as scaling or rotating elements, but it does not inherently imply the action of changing due to a hover.