The following are some of the more common terms in an electronic cigarette glossary of sorts and what they mean.

510

This refers to an e-cigarette with a particular componentry size. The 510 was originally developed by Chinese company JoyE and then widely emulated; becoming a standard of sorts in the industry.

Atomizer/Atty

The heating element component of an ecig that vaporizes the liquid

ADV

All Day Vape - an eliquid that you don't tire of using on a daily basis

Cartomizer/Carto

A cartridge that combines an atomizer with an eliquid reservoir.

Coil

The atomizer's heating element 

Doubler/Tripler

Terms referring to eliquids without nicotine that can be used to add flavour and reduce nicotine content of another liquid containing it.

Drip Tip

Used instead of a regular e-cig cartridge to direct drip eliquids straight on the atomiser without removal of the tip. Drip tips are also standard on many CE type clearomisers

Dry Hit

Taking a draw of an ecig without any vapor being produced.

Dry Burn

A method of cleaning atomizers to extend their life

Ego

This refers to an e-cigarette of a certain size and configuration. The Ego was also originally developed by Chinese company JoyE and then widely emulated; becoming a standard of sorts in the industry. An Ego type unit has a larger battery than a 510.

Eliquid

The fluid that is used in conjunction with an electronic cigarette.

Juice

Another name for eliquids

Mechanical Mod

A vaping device that contains no electronics

Mod

Short for modification made to an ecig

Nic

Short for nicotine, the addictive substance in tobacco

PCC

Personal Charger Case - usually styled similarly to a cigarette packet, the PCC acts as a holder for ecig batteries and cartridges as well as containing a larger battery for recharging ecigs. 

PG

Propylene Glycol - one of the base components of eliquids. Propylene glycol is used in many applications, including medicines and food.

PV

Personal Vaporizer - another name for an ecig

Tank

Eliquid reservoir

Throat Hit

Refers to the "bite" sensation at the back of the throat when inhaling ecig vapors, similar to that of tobacco.

.

Vape/Vaping

The act of using an electronic cigarette

VG

Vegetable Glycerine - a base component of eliquids. It is also used as a sweetener in food items and as an ingredient in cosmetic products.

VV

Variable voltage

VW

Variable wattage

Wick

The component of a cartridge that soaks up eliquid