perihelial
- quad information display
- quad in line
- quad in-line
- quad in-line package
- quad inline package
- quad inline packages
- quad input voltage controlled mixer
- quad integrated communications controller
- quad interface processor
- quad international communications corporation
- quad leadless package
- quad left
- quad light blaster turret
- quad link interface
- quad link protocol handler
- quad media access controller
- quad mill operation system
- quad-mode resonator
- quadnine productions
- quadoshka
- quad pack
- quadpack missile echo unit
- quad paper
- quad physical layer controller
- quadplay