What Does Inline Frame (IFrame) Mean?
An Inline Frame (IFRAME/IFrame) element allows one HTML document to be embedded within another HTML document. IFrames may be used in a variety of ways to enhance the user website experience, including displaying advertising content and comparing multiple documents.
Techopedia Explains Inline Frame (IFrame)
An IFrame element may contain another HTML document or even an entire website within the same browser window. In addition to having an independent scrollbar, the IFrame can serve as a link target, be printed and contains viewable source code. The IFrame allows Web programmers to change frame content via the utilization of client-side scripting (JavaScript) without requiring the website to be reloaded, allowing for interactive Web applications.