These terms are often coined by players and used very frequently. As such, it should be something to acknowledge as a new player so you can catch on to the community, and not viewing these can cause newer players to commit actions that some players may disagree with.
Ore: Mineral Ore
BA: Blood Amber
Many one-time events gain their own nicknames, which are used with decreasing frequency in the following months.
Event: Feature Event
Daily: Daily Mission
CW: Civil War
AD: Alien Decimation
PS: Planet Strike
SS: Sector Strike
VEGA: VEGA Mining (or VEGA Cargo)
VSec: VEGA Security
ISC: Iron Star Company
DC/VDC: (VEGA) Demon Corps
Xeno: Xeno Division
RH: Reaper Harvester
AR: Ancient Reaper
AH: Ancient Hive
Bubble: Defense Matrix. Used because the defense matrix looks like the top of a bubble covering the top of the base.
BM: (Black) Market
Clan/Guild: Different term for alliance
Jump: Player relocation / Warping a Javelin Flagship
In general, players use the first word of the name to refer to a particular ship. The exceptions are listed below:
Gen: Genesis Cruiser
Ranc: Rancor Battleship
Exo: Exodus Cruiser
Ven: Venom Battleship
Sword/BS/Board: Broadsword Destroyer
Mid: Midgard Carrier
Hawk/NH: Nighthawk Frigate
Rev: Revelation Cruiser
Val: Valhalla Carrier
Apoc: Apocrypha Cruiser
Rapt: Rapture Cruiser
Rag: Ragnarok Carrier
Jav/Taxi/Jumpship: Javelin Flagship
Corinth: Corinthian Cruiser
Valk: Valkyrie Carrier
Cane: Hurricane Frigate
Vig: Vigilante Battleship
Cov: Covenant Cruiser
HF/Hells: Hellfire Battleship
Damo: Damocles Destroyer
Dom: Dominion Carrier
Pun: Punisher Cruiser
Deci: Decimator Cutter
Anni: Annihilator Battleship
Exterm: Exterminator Destroyer
Pal: Paladin Carrier
Vindi: Vindicator Cutter
Lib: Liberator Destroyer
In general, players use the first word of the name to refer to a particular technology. The exceptions are listed below:
MD: Mass Driver
GD/Glad: Gladius Driver
Gat: Gatling Ray
WD: Wave Driver
ND: Neutron Driver
PB: Plasma Battery, old name of HEX Missile.
Mani/Many folds: Manifold Missile
XDC/Xeno Cannon: Xeno Disintegrator Cannon
I: Infernal Prefix (e.g: Iwave = Infernal Wave Driver)
H: Heavy Prefix (e.g: HCluster = Heavy Cluster Missile)
X: Xeno Prefix (e.g: XCluster = Xeno Cluster Missile)
V: Void Prefix (e.g: VPulse = Void Pulse Cannon)
Cap: Capacitive Plates
Cargo: Basic Cargo
AH: Armored Hold
XAH: Xeno Armored Hold
Rot: Rotation Thrusters
Shock: Shockwave Shield
Def: Deflector Shield
VF/Vol: Volatile Fuel
UR/ISIS Thruster/Allahu Akbar Thrusters: Unstable Reactor. The latter is used because the thruster explodes upon death, much like a suicide bomb. (Bomb is another, albeit less used term)
CM: Combat Module
Fact/Oven: Ship Factory
FB/Bay: Fleet Bay
Comm Warrior: A person who picks virtual fights using the chat system in order to annoy others. Some people do this to their enemies, while others do it to anyone they feel like. Comm Warrior bases are commonly found under Defense Matrixes in order to avoid being attacked by whoever he/she may annoy.
Carebear: A person who views insectors as bad, and usually police the sector trying to find insectors to attack. Much less common now, but used to be very common in the early stages after closed beta. Insecting is still used as a justification for PvP by bored players.
Coiner: A person who uses a disproportionate amount of their money to purchase coins, whereby they can repair their fleets/bases instantly or do just about anything else. Characterized by very high spending compared to other, more casual players.
Frubble: Moving your bridge out so another member of your alliance can 3 star you without taking damage and give you a 24 hour bubble.
Insector: A person who attacks people residing in the same sector. Very common.
Parking tickets: A term that expresses when people randomly hit unmoving fleets for one reason or another.
Prep: Weakening the base in such a way that the Defense Matrix does not trigger, commonly achieved by reducing the base health to just above 75%.
Raid: A large planned attack on a sector, an alliance or a coalition by another sector, alliance or coalition.
(Res) Thief/Stealer: Short for resource thief, a person who constantly steals resources without the permission of others. Often hard targets by most players and viewed as bad.
Insta: refers to an instant repair ship or fleet, or simply a ship with comparatively low repair time. (Minute Vens)
DAC: Short for "Damn Auto Correct", a common lament by mobile players whose devices often substitute incorrect words, often with hilarious results.
DC: Disconnection. This is often devastating when a player is in battle.
Misclick: More or less what it sounds like; when a player unintentionally attacks another.