Qapla' - A Klingon phrase to wish good fortune to someone.
QF - Quick Fix (Engineering Ability)
QFE - Quoted for Emphasis
QFT - Quoted for Truth or Topic
QMF - Quantum Mortar Fabrication (Engineering Ability)
QQ - Crying eyes
QSsD - Quantum Slipstream Drive
quad - Means four
quadrant - One quarter of something
quantum - A type of energy who's magnitude is proportional to its radiation.
quantum slipstream - A technology similar to transwarp which let a ship travel faster than a ship's highest warp factor.
quantum torpedo - A tactical quantum weapon, that utilized a plasma warhead, deployed aboard starships.
queue - A line or sequence that something is processed in.