Ships (by class):
AF/AS: Assault Ship
Inty/Ceptor: Interceptor
HAC/HAS: Heavy Assault Ship
BC: BattleCruiser
CBC/CS: Command BattleCruiser
BS: Battleship
DN/Dread: Dreadnought
SB/Bomber: Stealth Bomber; Shield Booster; Sensor Booster; Smartbomb
Indy: Industrial
Covops: Covert Ops Frigate, usually the ones that aren't bombers
MS: Mothership
Ships (Sorted by class):
Kessie: Kestrel (frig)
Cursus: Incursus (frig)
Ret/Retri: Retribution (AF)
Jag: Jaguar (AF)
Mal/Male/Diction: Malediction (inty)
Sader: Crusader (inty)
Ranis: Taranis (inty)
Manti: Manticore (bomber)
Arbi: Arbitrator (cruiser)
BB: Blackbird (cruiser)
Rax: Thorax (cruiser)
Ruppy: Rupture (cruiser)
Pilg: Pilgrim (recon cruiser)
Lach: Lachesis (recon cruiser)
Sac: Sacrilege (HAC)
Cerb: Cerberus (HAC)
Beagle: Eagle (HAC when fitted with blasters)
Vaga: Vabagond (HAC)
Harbi: Harbinger (BC)
Prohp: Prohpecy (BC)
Myrm: Myrmidon (BC)
Cane: Hurricane (BC)
NH: Nighthawk (CS)
Sleip: Sleipnir (CS)
Arma/Geddon: Armageddon (BS)
Apoc: Apocalypse (BS)
Aba: Abaddon (BS)
Scorp: Scorpion (BS)
Dom/Domi: Dominix (BS)
Mega/Thron: Megathron (BS)
Phoon: Typhoon (BS)
Temp/Pest: Tempest (BS)
Vindi: Vindicator (Faction BS)
Mach: Machariel (Faction BS)
Itty #: Iteron Mark # (industrial)
Bessie/Stower: Bestower (industrial)
Fittings:
MAPC: Micro Auxiliary Power Core
PDU: Power Diagnostic System
RCU: Reactor Control Unit
CPR: Capacitor Power Relay
CPU: Co-Processor
Weapons:
HS: Heatsink
GS: Gyrostabilier
BCU: Ballistic Control System
MFS: Magnetic Field Stabilizer (also Mag Stab)
Mag Stab: Magnetic Field Stabilizer (also MFS)
SB/Smarty: Smartbomb; Stealth Bomber; Shield Booster; Sensor Booster
DLB: Dual Light Beam Lasers
DLP: Dual Light Pulse Lasers
MPL: Medium Pulse Laser
AC: Autocannon
Arti: Artillery
Howi: Howitzer
Nos: Nosferatu (small/medium/large)
Neut: Energy Neutralizer (small/medium/large)
Propulsion:
MWD: Microwarp Drive (1/10/100 MN)
AB: Afterburner (1/10/100 MN)
WCS/Stabs: Warp Core Stabilizer
Nano: Nanofiber Internal Structure
Istab: Inertia Stabilizers
OD: Overdrive Injector System
Poly: Polycarbon Engine Housing (a mass reduction rig)
Armour:
Hardener: Armour or Shield hardener, both active and passive
EANM: Energized Adaptive Nano Membrane
SAR/MAR/LAR: [Size] Armor Repairer
ARU: Armor Repair Unit
50-1600mm (when referring to armour): Xmm Reinforced Steel Plates (though usually referring to the best named Reinforced Rolled Tungsten Plates)
Shields:
Hardener: Shield or Armour hardener, both active and passive
SB: Shield Booster; Sensor Booster; Smartbomb; Stealth Bomber
SPR: Shield Power Relays
Extender: [Size] Shield Extender
Sensors:
SB: Sensor Booster; Smartbomb; Stealth Bomber; Shield Booster
Electronic Warfare:
Web: Stasis Webifier
Scram/Jammer: Electronic Countermeasures; Warp Disruptor/Scrambler
Damp: Remote Sensor Dampener
TD: Tracking Disruptor
Painter: Target Painter
Ship Setups (by type)*NOTE, REV2 is current, it's generally bad to resurrect threads older than REV:
RMR: Red Moon Rising
PVP: Player vs Player
PVE: Player vs Environment
Rev: Revelations
NPC: Non-Player Character (see PVE)
0.0: lawless space (outside of empire and lowsec)
Ratting: see PVE/NPC
Bleeder: a pvp setup designed to outlast your enemy, slowly wearing him down while he's unable to take you out... mostly obsolete due to passive tanks
Mission: mission running, see PVE/NPC/Ratting (lots of similarities)
Solo: solo PVP, usually self sufficient with ability to tank, gank, and tackle
Lv4: level 4 missioin tested... Lv5 is probably gonna be the new standard once those come in
Factions:
DB: Dark Blood
DG/Dread: Dread Guristas
Dom: Angel Cartel (Domination)
Gist: Angel Cartel
SS: Shadow Serpentis
TS: True Sansha
Item Quality:
T1: Tech 1, base item, usually referring to best named
T2: Tech 2
Named: Usually best named item
Faction: A rare version of T1 items, such as a "True Sansha Warp Scrambler"
Plex/Complex/Deadspace: An even rarer type of item, dropped by rats inside complexes, such as "Gistii A-Type 1MN Microwarp Drive"
Officer: The rarest and most expensive mods, dropped by very rare officer rats, usually with huge bonuses and sometimes drawbacks over T1 items, such as "Chelm's Modified Heat Sink"
Forum:
OP: Original Poster (the person who started the topic, usually refers to his post)
QFT: Quoted for truth, usually does little more than spamming, but hey, it's there
Pwned: Owned, mis-spelled, and actually more common now
Communications:
Vent: Ventrilo voice communication software
TS: TeamSpeak voice communication software
Eve Voice: Ensures I don't make enemies
Minerals:
Trit: Tritanium
Pyer: Pyrerite
Mex: Mexallon
Iso: Isogen
Nox: Nocxium
Zyd: Zydrine
Mega: Megacyte
Morph: Morphite
Combat:
PVP: Player vs Player
PVE: Player vs Environment (??), referring to combat against NPCs
Rat: Pirate NPCs
Spawn: a group of NPCs, or the act of a group of NPCs appearing
Podded: Losing ones ship and the ejected pod. Usually to be avoided at all costs.
Bubble: Interdictor Warp Disrupt Probe or Mobile Warp Disruptor. Prevents the warping of all ships within its (sometimes huge) range. Only allowed in 0.0 space.
Camp: A gatecamp. Quite common in low-security space. Often a corporation or alliance sitting on a gate with or without bubbles, waiting for people to get trapped, and then killing them.
Gank: The amount of damage a ship is set up to do. ex: "I'm gank fitted" or "I'm in a Gankageddon". Can also refer to getting "ganked", or killed.
Tank: The amount of damage a ship is set up to absorb. ex: "I'm tanked to the gills". Can also refer to absorbing the damage from a complex or a rat spawn. ex: "I can tank 3 1.5 million bounty BSs while I mine".
Speedtank/Kiting: The ability of some ships (usually smaller ones) to move quickly enough as to not take any damage from larger guns. An afterburner-fitted interceptor can usually "speedtank" or "kite" an NPC spawn.
Tackle/Tackler: To Warp Scramble/Disrupt a target as well as sometimes Stasis Webify them, or to be the person doing it. Usually done by frigs.
Miscelanea:
BM: Bookmark, sometimes of a safespot, or other points of interest
Insta: A kind of bookmark set up so that it lands you at 0km from an object. Since warp to 0km was introduced, largely nonexistent.
SS/Safe: Safespot (spot in space that's not directly in line with any 2 objects)
Deepsafe: A safespot which is very hard to scan out, due to being more than 5AU from all objects
POS: Player Owned Structure
OP: Outpost
KOS: Kill on Sight
NBSI: Not Blue Shoot It (referring to alliances in 0.0 killing anyone not set as friendly)
NRDS: Not Red Don't Shoot (usually when flying through empire)
Cyno: Cynosural Field, generated by ships to be used by some Capital ships