1080p is short form term designating a set of HDTV characterized by 1080 horizontal lines resolution and progressive scan. In contrast to the 1080i standard, in 1080p the image is not interlaced. The term 1080p in most cases refers as well to the widescreen aspect ratio of 16:9, which implies a horizontal resolution of 1,920 pixels. The supported frame rate can be added to the term, e.g. 1080p24. Sometimes 1080p is referred to as Full HD.