The word "quad" is short for the word "quadrilateral," which means a shape with four sides. It can also refer to a square-shaped area, like a courtyard or a college campus. Full definition
The Fire HD 8 isn't exactly a beast in term of specs, but it offers decent performance, courtesy of a 1.3 GHz quad core processor, decent for casual mobile gaming. (tablet-news.com)
It comes loaded with common features as seen on other 1.3 GHz quad core powered handset but with a difference. (gogi.in)
While there's nothing wrong with this, it's not a 5.5 - inch with Quad HD resolution. (digitalhome.ca)