A sub genre of metal combining technical and complex guitar and drum patterns often associated with polyrhythms, djent and odd time signatures, with distorted rhythms. Some good examples of technical metal bands are "The Dillinger Escape Plan" and "Polyphia."
Another name for Technical Metal is Progressive Metal.
Person 1: Hey dude! Check out this new band! They are so technical.
Person 2: Nice dude! I love Technical Metal!
Person 1: I love the polyrhythm riff technicalities of the guitar riffs and drum patterns!