Sometime the vets on the forums tend to use terms and slag for some of the most common items, methods and hardware for vaping. This is not the ultimate guide but should make some of the terms a little clearer. (I hope)...
Basic Jargon
Vapor - Vapor is the substance exhaled when using an electronic cigarette which may look similar to cigarette smoke.
Vaping - The act of using an Electronic Cigarette (as opposed to "smoking", as the device creates a vapor rather than smoke).
Vape - Used often in place of the word smoke. I vape, I'm vaping.
Batt - Battery.
Atty - Electronic component that turns the eJuice into vapor.
Cartridge or Cart - The part of a three piece electronic cigarette which contains the liquid. These come blank (with no liquid), or prefilled.
Cartomizer or Carto - The part of a two piece electronic cigarette which contains the liquid. These come blank (with no liquid), or prefilled.
Analog - Traditional tobacco cigarette.
DIY - Do It Yourself.
Dripping - To place a few drops of liquid directly onto the atomizer instead of using a cartridge.
Drip Tip or DT - A special attachment used to make it easier to drip eliquid directly onto the atomizer.
Mod - Modified (custom built) e-cigarette.
TH - Throat Hit a strong feeling in the back of the throat when vaping.
Primer Puff - A short, quick mouth inhale on the electronic cigarette similar to the action when smoking a pipe or cigar. This heats up the atomizer before a full draw.
PV or Personal Vaporiser - An electronic cigarette. Some prefer to use this term as the word 'cigarette' has a lot of negative connotations associated with it that do not apply to PVs.
PCC - Personal Charging Case / Portable Charger Case.
Passthrough or PT - A USB adapter for the Electronic Cigarette which screws onto the atomizer like a battery, but draws power from a USB port.
E-Liquid / E-Juice
E-Liquid / E-Juice - A Flavored or unflavored liquid for use in an electronic cigarette, usually (but not always) containing nicotine.
VG - Vegetable Glycerin
PG - Propylene Glycol
PEG - Propylethylene Glycol
PGA - Pure Grain Alcohol
NPG - Not containing Propylene Glycol. Sometimes used as a synonym to Vegetable Glycerin.
Nic - Nicotine
Cartridge Related
Filler - The clump of fibers that hold the liquid in the cartridge.
Stuffing - Another term for filler.
BFM - Blue Foam Mod. (cart filler material)
Dripping - To place a few drops of liquid directly onto the atomizer instead of using a cartridge.
Dry Smoking - Same thing as dripping, referring to the fact that the cartridge us usually not filled, therefore dry.
Tailpiping - Vaping directly from the atomizer without using a mouthpiece/cartridge.
Drip Tip or DT A special attachment used to make it easier to drip eliquid directly onto the atomizer.
Topping Up/Off - To add a few drops of liquid to a partially used cartridge to prolong its use.
Measurements
LR - Low Resistance
HV - High Voltage (typically a 5 or 6 volt ecigarette)
IMR - A battery with lower internal resistance and a high discharge rate, good for high drain applications like ecigarettes.
in - inch (also abbreviated ") (1 inch = 25.4 mm)
mm - millimeter (1 mm = 0.039 inch)
cm - centimeter (1 cm = 0.394 inch)
oz - ounce (1 fluid oz = 29.5 ml)
ml - milliliter (1 ml = 0.034 fluid ounce)
cc - cubic centimeter (1 cc = 1 ml)
mg - milligram (often used as measure of nicotine per ml of eliquid)
mA - milliamp (often used as a measure of available power)
mAh - milliamp hour (often used as a measure of battery capacity/duration
Forum Phrases
PM - Private Message
Troll - Somebody who makes a statement with the intention of annoying or angering other posters. This person usually ends up banned.