Definition of a Sidebar in Writing. A sidebar is exactly what it sounds like. It is simply a shorter piece or text that accompanies a longer article in a publication such as a magazine or newspaper, often graphically separate but related to the main idea.
In REading article
A sidebar is exactly what it sounds like. It is simply a shorter piece or text that accompanies a longer article in a publication such as a magazine or newspaper, often graphically separate but related to the main idea. A sidebar always appears on the side of an article, hence the name
A sidebar is text that is separate from the main text on a page. It is often a shorter piece of information that is related to the main topic or gives another point of view about the topic. The blue box circled at the bottom of the page is a sidebar.