Article / Updated 03-26-2016
Generally speaking, an edge loop in Blender is a series of edges that connect to form a path where the first and last edges connect to each other — well, that's the ideal case anyway. This kind of closed edge loop is a "good" edge loop. Of course, then you probably want to know what a "bad" edge loop is. Well, you can have a path of edges that don't connect at the beginning and end of the loop, but calling these loops bad isn't really accurate.