Here's a good one from VF. Can't post a link so I copied and pasted.
Glossary of terms and abbreviations
Admin - administration/administrator
Analog - A tobacco cigarette.
Atomizer (aka atty) - The part that heats up the e-liquid and turns it into vapor.
Atomicer - Lolcatz atty
Battery (aka Batt) - batteries used to run PV's
Beci - bestecig.com abbreviation
Blanks - Cartridges with dry filler material to be filled with e-liquid by the user. Also a cartridge with the filler material removed to be used as just a mouthpiece when dripping liquid.
Cartomizer - A type of cartridge that combines the cartridge and atomizer in one unit.
Cartridge (aka Cart) - The part that makes up the mouthpiece for the electronic cigarette and contains a reservoir with filler material to hold the e-liquid.
cc - Cubic Centimetre (1 cc = 1 ml)
Chest/Lung Hit - Feeling in your chest of vapor filling it up (varies based on liquid content)
Cleaning Cycle - When the battery turns itself to a constant on for a period of 20-40 seconds to burn the residue off the atomizer (removing cartridge during this process prevents the polyfil from melting onto the atomizer)
cm - Centimetre (1 cm = 0.394 inch)
Coil - The part inside the atomizer that heats up.
Core - A cartridge which has no e-liquid/juice in it. It is dry and can be filled with the juice of your choice.
Cut off - Battery shutdown to protect atomizer from overheating.
DOA - Dead On Arrival
Dipping - The practice of dipping an exposed atomizer coil into e-liquid.
DIY - Do-It-Yourself
dr - Dram (1 dram = 3.7 ml)
Dripping - The practice of dripping e-liquid directly onto the atomizer coil.
ECA - Electronic Cigarette Association
ECF - e-cigarette-forum.com is the most popular and widely populated forum about electronic cigarettes
E-cig - An electronic cigarette or personal vaporizer (PV)
E-liquid - The liquid used in an electronic cigarette to produce the vapor. (aka nic liquid, juice, e-juice, niquid, nic juice, etc...)
Electronic Cigarette - also known as E-cig & Personal Vaporizer (PV)
ETA - Edited to Add
ETA - Estimated Time of Arrival
FDA - Food and Drug Administration
Filler - the stuff in cartridges that holds the eliquid.
GG - The Golden God (A model of PV)
in - Inch (also abbreviated ") (1" = 25.4 mm)
Jaffa Cakes - a spongy, biscuity sort of cake thing with orange jam (jelly) in the middle and covered in chocolate. Known as PIM's in the States. Yummy!
JC - Johnson Creek (an e-liquid distributor)
JL - Juicy Liquid (an e-liquid distributor)
JS - Janty Stick (A model of PV)
KB - Kissbox (an e-cig from Janty)
Kensington - Common model of Portable Power Pack used with a USB passthrough for portable long term
vaping
Li-ion - Lithium ion batteries used in PV's
Lolcat - Rulerz of teh universe and eberything in it - inkluding hoomanz
LIVC - Long Island Vapers Club
LV - Light Vaper (a Mod)
mA - Milliamp (often used as a measure of available power)
mAh - Milliamp Hour (often used as a measure of battery capacity/duration)
Manual Switch - Switch operated by user to turn battery power on/off
MC - Menthol Crystals which are used to make e-liquid.
MG - Milligram refers to the amount of nicotine per milliliter of e-liquid.
ml - Millilitre (1 ml = 0.034 fluid ounce)
mm - Millimetre (1 mm = 0.039 inch)
Mod - modification or moderator depending on context
Modder - One who modifies PV's
MOQ - Minimum Order Quantity
MVS - My Vapor Store (an e-cig distributor)
Nic - nicotine
NRT - Nicotine Replacement Therapy
OP - original post/poster depending on context
oz - Ounce (1 fluid oz = 29.5 ml)
Passthrough (PT) - A device that is used in place of a battery that connects to a USB outlet to draw power.
PCC - Personal Charging Case
PD - Prodigy (an e-cig from PureSmoker)
PEG - polyethylene glycol
PG - propylene glycol
PM - Private Message
Polyfil - (aka stuffing/batting/fiber/wool) the material that fills the cartridge
The Pond - The Atlantic Ocean
Prodigy - USA made model PV
PS - Pure Smoker (an e-cig distributor)
PTB - pyramid tea bag (specific type of tea bag used for cartridge filing instead of polyfil or fluval)
PV - (Personal Vaporizer) - An electronic cigarette/cigar/pipe/box/mod/stick which vaporizes e-liquid
PV Liquid - The liquid used in an electronic cigarette to produce the vapor. (aka eliquid, nic liquid, juice, e-juice, niquid, nic juice, etc...)
QC - Quality Control
RTV - RightToVape.org
RY4 - (aka riskee yuice) is a very popular flavor which is often described as a mix of caramel and vanilla with a smokey flavor to it.
RYO - roll your own
SD - Screw Driver (A model of PV)
Snus - nicotine tabs used as nicotine replacement
Tailpiping -vaping without using a cart or mouthpiece, just sucking the atomizer tube.
TAWA - Throw Away Atomizer (no warranty)
TIA - Thanks In Advance
TW - Totally Wicked (an e-cig distributor)
Throat Hit (TH) - Feeling in your throat caused by vapor being inhaled
(varies with nicotine level and liquid content/flavor)
Topping off - Putting more e-liquid in the cartridge you are using
TSNA - Tobacco Specific Nitrosamine - supposed carcinogen (only 2 proven carcinogenic)
USB Passthrough - (aka PT) is an empty battery which has a wire and a USB plug and runs off your computer's power or a portable power pack
Vaper - One that engages in vaping.
Vaping - The act of using an electronic cigarette.
Vapor - the smoke like emmision (steam) produced by using an electronic cigarette
VF - ***********.com
VG - glycerine (vegetable glycerine)
WTF - Wholey Technofoggers (The Order of the Wholey Technofoggers, our vaping cult).