Guardians Lore: Mass Plasma Driver
Guardians lore: mass plasma drive (mpd) the mass plasma drive (referred to as mpd, mass drive, or md for short) is a drive that fires a steady stream of plasma over a large surface area and a high yield that is hardly achieved using phasors or plasma cannons
Guardians: Downfall Revised Chapter 4
At the center bottom of the ship was a divit where the mpd was, or mass plasma driver, commonly referred to as mass drive by most.