Borrowed this from another blog but seemed fitting to put here. Enjoy. 306: One of many styles of electronic cigarettes available. Many users of the 510 e-cigs are using the 306 atomizers on their batteries, as they feel it gives a better experience. 510: The most common style thread fitting for an atomizer 901: A style thread fitting for an atomizer Analog or Analogue: Slang term for a traditional cigarette. Atomizer (Abbreviated as Atty) - The part of an e-cigarette that actually heats the juice to the point of vaporization. Automatic: A style of electronic cigarette battery that does not have a button to activate the heating element. Rather, when the user draws on the device a switch is activated and the atomizer is activated. This style of e-cig is most like smoking a traditional cigarette. Battery (Abbreviated as Batt): The battery piece of an electronic cigarette is the part that provides power to the heating element. This allows the heating element to heat the Juice and produce vapor. Bridge: A small U-shaped covering inside of the atomizer. This is used to absorb liquid and help wick it towards the heating element. Cartomizer (Abbreviated as Carto): A cartridge and atomizer in a single unit. These generally are disposable, inexpensive and hold more juice than a regular cartridge/atomizer combination. Charger: A battery charger. This is used to recharge your e-cig battery once it has been depleted. Drip Tip: An accessory that can be used in conjunction with an atomizer or cartomizer. These have a larger opening than the original equipment and allows a user to drip Juice directly onto the atomizer. Some people use a drip tip on their Cartomizers simply for looks and/or comfort. Dripping: A method of adding juice to the atomizer. A user will drip a few drop directly onto the atomizer before vaping. E-Juice: Also referred to as E-Liquid, Juice, or Smoke Juice. This is the liquid that is vaporized when using an electronic cigarette. E-Liquid: Also referred to as E-Juice, Juice, or Smoke Juice. This is the liquid that is vaporized when using an electronic cigarette. eGo - A style of electronic cigarette that utilizes the 510 threads and allows one to use 510 components but with a much larger battery. Electronic Cigarette (Abbreviated as E-Cig): A device that heats up a liquid solution consisting of nicotine, propylene glycol and/or vegetable glycol, and flavorings to a point where it actually turns into a vapor which can be inhaled. Flooding: Something that can occur when too much Juice is applied to the atomizer. Since atomizers require some air to properly vaporize Liquid, adding too much Juice to an atomizer will cause a decrease in Vapor Production and flavor. Food and Drug Administration (Abbreviated as FDA): An administrative branch of the United States government that oversees rules and regulations pertaining to the safety of food and drug products sold in the USA. There is currently a very controversial lawsuit involving the FDA and the importation and distribution of electronic cigarettes. Juice: Also referred to as E-Liquid, E-Juice, or Smoke Juice. This is the liquid that is vaporized when using an electronic cigarette. Leaking: This can happen when too much Juice is added to an atomizer or cartomizer. Juice can leak out of the bottom of the heating element and onto the battery, which in some cases can cause damage to the device (as is the case with Automatic Batteries). Light Emitting Diode (Abbreviated as LED): A diode that converts applied voltage to light. These are commonly used in electronic cigarette devices to indicate that the device is actively being used. Liquid: Also referred to as E-Liquid, E-Juice, Smoke Juice, or Juice. This is the liquid that is vaporized when using an electronic cigarette. Low Resistance (Abbreviated as LR): An atomizer or cartomizer with a lower Ohm rating than the standard equipment. This generally causes the heating element to get hotter faster and produces vapor more quickly. In many cases it produces more vapor than an atty or carto that has a standard resistance rating. Manual: A style of electronic cigarette battery that has a button (usually on the top or side of the battery) that activates the heating element. When the user wishes to use the device, the button must first be depressed in order to produce vapor from the atomizer. This style of e-cig is less like a traditional cigarette than the Automatic, but is preferred by many due to the fact that it is sealed and can not be adversely affected by Leaking. Milligrams (Abbreviated as mg): The amount of nicotine found in a Juice. Typical levels include 0mg, 6mg, 8mg, 12mg, 16mg, 18mg, 24mg, 30mg, 36mg and 48mg. Generally speaking, a medium level of nicotine is around 18mg. Those who use Juice with a higher nicotine content than that are generally people who were heavy smokers or have been vaping for quite some time. Milliliters (Abbreviated as mL): The amount of Juice in a given container. Mod: Dual usage: Can be used to describe modifications to a device or accessory (such as getting more vapor production out of your cartridges) or a design variation of a commonly manufactured electronic cigarette. In the latter context, mods typically use larger rechargeable Lithium Ion batteries and allow the user longer battery life and increased vapor production but at the cost of the device looking like a traditional cigarette. Many mods will also allow the user to increase or decrease the voltage of their device to achieve optimal performance. Ohm - A measure of electrical resistance. A lower number indicates lower resistance and therefore faster heating. Passthrough: A device that plugs directly into the USB port of a computer or charger and allows the user to vape without having to worry about battery life. Some users report better vapor production and/or flavor while using a Passthrough compared to their regular batteries. Personal Vaporizor (Abbreviated as PV): Another name for an Electronic Cigarette. Usually used in reference to the more untraditional style e-cigs (also known as Mods). Propylene Glycol (Abbreviated as PG): An ingredient found in many brands of E-Juice. Some users have reported an allergic reaction to it and must therefore use 100% VG Juice instead. This is one of the ingredients used that when heated will produce vapor that can be inhaled. Typically, PG produces less vapor than itâ€™s VG counterpart but provides more flavor and Throat Hit. This substance has been used as a primary ingredient in medical inhalers for years. Throat Hit (Abbreviated as TH) - The tingling feeling one feels in the back of the throat when vaporizing juice that contains nicotine. Typically, since nicotine is a large contributing factor in throat hit, when a juice that contains zero nicotine is vaporized, there is no throat hit. Vape: The action of â€œsmokingâ€ an electronic cigarette. Since e-cigs actually produce vapor (rather than smoke) people refer to this as â€œVapingâ€. Vapor Cigarette: A term used to refer to an electronic cigarette. This term is used commonly due to the water vapor that is exhaled when using an e-cig. Vapor Production: Typically associated with Juices. Indicates how much vapor is produced using an average inhale of an e-cigarette. Vegetable Glycerol or Vegetable Glycerin (Abbreviated as VG): An ingredient found in many brands of E-Juice. This is one of the ingredients used that when heated will produce vapor that can be inhaled. Typically, VG produces more vapor than itâ€™s PG counterpart but provides less flavor and Throat Hit. Some users who are allergic to Propylene Glycol must use 100% VG Juices. VG - Abbreviation for Vegetable Glycerol or Vegetable Glycerin. Wick: A narrow piece of poly string that is inside of many styles of atomizers that allows easier delivery of Juice to the heating element.