Back-to-Basics: 6th edition 40k Acronyms

Okay guys, we've updated the Acronym page with everything you've given us and some more we could come up whilst editing the post. Here's all the listed ones currently so let's see if we cannot fill it out a bit more for all the new guys coming through.

General Rule Acronyms

#+ - model's save value

#++ - model's invulnerable save value

ATSKNF - And They Shall Know No Fear

AV - Armor Value

B2B/BTB - Base to base (contact)

BRB/BYB - Big Rule/Yellow Book

Dakka/Torrent - lots of shots

FC - Furious Charge

FNP - Feel No Pain

FMC - Flying Monstrous Creature

GEQ - Guardsmen Equivalent (i.e. T3/5+)

HP - Hull Points

ID - Instant Death

IWND - It Will Not Die

LoS - Line of Sight

LoS! - Look out Sir!

MC - Monstrous Creature

Mech - Vehicles

MEQ - Marine Equivalent statline (i.e. T4/3+)

MSU - Multiple Small Units

RCL - Random Charge Length

RGL - Random Game Length

TL - Twin-linked

TLoS - True Line of Sight

WAAC - Win At All Cost

WYISWYG - What You See Is What You Get

General Acronyms

AC - Autocannon (or Assault Cannons)

Assback - Razorback with Assault Cannons

Asscan - Assault Cannons

Bolterback - Razorback with Heavy Bolters

CML - Cyclone Missile Launcher 

DP, DPod or Pod - Drop Pod 

Flamerback - Razorback with twin heavy flamers 

HB - Heavy Bolter

Lasback - Razorback with Lascannon

LasPlas - Razorback with Lascannon, twin-linked plasma guns OR squad with lascannon and plasmagun

LC - Lightning Claw (commonly written as LClaw)

LC/Las - Lascannon

LR or Godhammer or Land Raider Phobos - Land Raider 
LRC - Land Raider Crusader 
LRR - Land Raider Redeemer 

melta/mgun - meltagun

ML - Missile Launcher

MM - Multimelta

PA - Power Armor

PF - Power Fist

Plasmaback - Razorback with Lascannon, twin-linked plasma guns

plasma/pgun - plasma gun

PW - Power Weapon

RBack - Razorback

SS - Stormshield

TDA - Tactical Dreadnought Armor aka Terminator Armor

TH - Thunder Hammer

Specific Army Acronyms

(BT) Black Templars -

EC - Emperor's Champion

PotMS - Power of the Machine Spirit

(BA) Blood Angels -

AB - Attack Bike

ASM - Assault Space Marine or Assault Squad Marine  
ACLC/Autolas Pred - Predator with autocannon and lascannon sponsons 
BP or Baal - Baal Predator 
Dakka Baal - Baal Predator with twin assault cannons and heavy bolter sponsons 
Dakka Pred - Predator with autocannon and heavy bolter sponsons 
DC - Death Company 
DC Dread or DCD - Death Company Dreadnought 
Devs - Devastators 
GE - Glaive Encarmine 
Flame Baal - Baal with Flamestorm cannon 
Hammernators or TH/SS - Assault Terminators with thunder hammers and storm shields 
IP or Infernus - Infernus Pistol 
JP - Jump Pack 
LS or Speeder – Land Speeder 

Mephy - Mephiston 
MMAB – Attack Bike with Multimelta 
PP - Plasma Pistol 
RAS - Regular Assault Squad (not as commonly used anymore) 
SG - Sanguinary Guard or Sternguard

SP or Priest - Sanguinary Priest 
SR or Raven – Storm Raven 
Tac Squad or Tacticals – Tactical Squad 
Vindi - Vindicator 
VV - Vanguard Vets 
WW or Whirly - Whirlwind 

Chaos Daemons -

Fatecrusher - Build relying on fateweaver and a bunch of bloodcrushers
MoS - Master of Sorcery 
WaL - We are Legion
BoT or Bolt - Bolt of Tzeentch
DP - Daemon Prince 
SG - Soul Grinder 
oT, oK, oN, oS, oC - of Tzeentch, of Khorne, of Nurgle, of Slaanesh and of Chaos respectively 

Flying Circus - army based upon lots of Flying Monstrous Creatures

(CSM) Chaos Space Marines - 

DP - Daemon Prince

MoCU  - Mark of Chaos Undivided

MoK - Mark of Khorne

MoN - Mark of Nurgle

MoS - Mark of Slaanesh

MoT - Mark of Tzeentch

(DA) Dark Angels -

DW - Deathwing

RW - Ravenwing

(DE) Dark Eldar -

DL - Dark Lance

FF - Flickerfields

PGL - Phantasm Grenade Launcher

NS - Night Shields

Eldar -

BL - Bright Lance

DA or Avengers - Dire Avengers

DAVU - Dire Avengers Vehicle Upgrade

DR or Reapers - Dark Reapers

EML - Eldar Missile Launcher

Falc - Falcon Grav Tank

FD or Dragons - Fire Dragons

Footdar - Eldar army based on foot

GJB - Guardian Jet Bike

HB or Shees - Howling Banshees

Jetcouncil - Seer Council on Bikes

Jetseer - Farseer on a Jetbike

Mechdar - Eldar army based on vehicles

PL - Phoenix Lord

Prism - Fire Prism

SC - Shuriken Cannon

Seer Council - squad of Warlocks often led by Farseer

SL - Scatter Lasers

Spears - Shining Spears

Spiders - Warp Spiders

SS or Scorps - Striking Scorpions

SW or Hawks - Swooping Hawks

underslung/chin cannon - upgraded Shuriken Cannon on vehicles

WL - Wraithlord

WS or Serpent - Wave Serpent

WW - War Walkers

(GK) Grey Knights -

DH - Nemesis Daemon Hammer

Halb - Nemesis Halberd
Stave - Nemesis Warding Stave

Psyback - Razorback with psybolts and a twin-linked heavy bolter  
Passback - Razorback with twin-linked assault cannons and Psybolts 
Psyfledread - Dread w/two twin-linked autocannons and Psybolts 
GKGM - Grey Knight Grand Master 
GKSS - Grey Knight Strike Squad 
GKT - Grey Knight Terminators 
PAGK - Power Armoured Grey Knight  

Psybolt - Psybolt Ammunition

(IG) Imperial Guard -

BiD - Bring it Down

CCS - Company Command Squad 
PCS - Platoon Command Squad 
MBT - Russ main battle tank (standard variant) 
HWT - Heavy Weapon Team 
SWS - Special Weapon Squad

Chim - Chimera

Detta - Vendetta

Flashlight - Lasgun

FOMT - Fire on my Target

FRFSRF - First Rank, Fire! Second Rank, Fire!

GBITF - Get Back in the Fight

Manti - Manticore

RR - Rough Riders 

ST - Storm Troopers

Vets - Veteran Squad

Necrons -

CCB - Catacomb Cmmand Barge. 
RP - Reanimation Protocols (may still get called WWB, or We'll Be Back, the similar rule from the last codex that was more fun to say). 
somethingTEK - Any of the various Harbringer upgrades to a Cryptek. Cryptek with Harbinger of the Storm shortens to Stormtek, Cryptek with Harbinger of Destruction becomes Lancetek (named after its weapon, the Eldritch Lance), etc. 
RO or Orb - Resurrection Orb. 
PS - Phase Shifter (3++ save) 
SW or Semp Weave - Sempiternal Weave (2+ save) 
ES - Entropic Strike 
WS - Warscythe. 
PS/DS - Phase Sword and Dispersion Shield combination for Lychguard. 

EL - Ever-living 
MSS - Mindshackle scarabs  

Orks -

KFF - Kustom Force Field

PK - Power Klaw

(SoB) Sisters of Battle -

(SM) Space Marines -

TH/SS - Thunderhammer/Stormshield Terminators

Rifleman - Dreadnought with 2x twin-linked autocannons

(SW) Space Wolves -

CotS - Chooser of the Slain

RP - Rune Priest

TW/C - Thunderwolf Cavalry

WL - Wolf Lord 
Thunderlord - Wolf Lord mounted on a Thunderwolf
WG - Wolf Guard 
WGPL - Wolf Guard Pack Leader 
WGBL - Wolf Guard Battle Leader 
LF - Long Fangs 
GH - Grey Hunters 
BC - Blood Claws 
WP - Wolf Priest 
JoWW - Jaws of the world wolf, some times just called jaws. 
LL - Living Lightening 
MH - Murderouse Huricane 
Loganwing - Army built around a solid base of WG and Logan Grimnar. The latter enabling WG to be taken as troops.  

Tyranids -

BS -Bonesword
SC - Syanpse Creature

HG - Hive Guard

SitW - Shadow in the Warp
TS - Toxin Sacs
AG - Adrenal Glands
Dev - Devourer
HT - Hive Tyrant
Devilgaunt - Termagants with Devourers
IB - Instinctive Behaviour
VC - Venom Cannon
HVC - Heavy Venom Cannon
CS - Cluster Spines
LW - Lash Whip 

Terv - Tervigon

Tfex - Tyrannofex

Tau -

ASS - Advanced Stabilisation System 

BSF - Blacksun Filter

BC - Burst Cannon 

BK - Bonding Knife 
DC - Drone Controller 

F - Flamer 

FB - Fusion Blaster

GD - Gun Drone 

HW - Hard Wired 

IA - Iridium Armour 

MD - Marker Drone 

ML - Markerlight

MP - Missile Pod  

MT - Multi Tracker 
PR - Plasma Rifle 

PR - Positional Relay 

TA - Targetting Array 

TL - Target Lock, also Team Leader, these must be figured out contextually 
SD - Shield Drone 

SG - Shield Generator 
Stimms - Stimm Injectors