Jammer: One of the ECM modules.
LML: Light Missiles Launcher
LSB: Large Shield Booster
LSE: Large Shield Extender
MFS: Magnetic Field Stabilizer
MJD: Micro Jump Drive
MSE: Medium Shield Extender
MWD: Microwarp Drive.
Mag Stab: Magnetic Field Stabilizer
Multispec: ECM - Multispectral Jammer.
NPC: Non-Player Character
Nano: Nanofiber Internal Structure
Neut: Energy Neutralizer
Nos: Nosferatu.
PDS (or PDU): Power Diagnostic System.
PDS: Point Defense System
Painter: Target Painter
Point: A warp disruptor or warp scrambler
Prop Mod: Propulsion Mod
RCU: Reactor Control Unit.
RHML: Rapid Heavy Missile Launcher
RLML: Rapid Light Missile Launcher
Racial Jammer: Any of the other kinds of ECM modules.
Repper (or just rep, or rarely AR): Armor/Shield Repairer (size usually indicated).