The Complete UK Vaping Glossary: 2025 Edition
Your Essential Guide to UK Vaping Terminology
Vaping in the UK has evolved rapidly, driven by innovation, consumer preferences, and legislation — including the June 2025 ban on single-use disposable vapes. Whether you’re a first-time vaper or an experienced user, knowing the terminology helps you make informed decisions, choose the right products, and stay compliant with UK law.
With more than a decade in the vaping industry, we combine real-world experience with up-to-date regulatory knowledge to give you a trustworthy and practical guide to vaping terminology.
A
Adjustable Airflow: A control on many tanks that adjusts the balance between air and vapour when you inhale. More airflow creates an light, cooler inhale; less airflow gives a more intense draw and stronger flavour.
ADV (All Day Vape): An e-liquid that a vaper can happily use throughout the day without it becoming boring or overwhelming the palate. It’s a flavour that maintains its appeal over extended periods.
AIO (All-in-One): A device where the battery and atomiser are built into a single unit. Compact and easy to use, but usually only works with its own components. Can be a good choice for beginners.
Amps (Ampere): A measure of electrical current. In vaping, it refers to the rate of power flow from the battery to the coil. Staying within safe amp limits prevents overheating or battery damage.
Analogue: A slang name that vapers sometimes give to a traditional tobacco cigarette that you light up and smoke in the old fashioned way (as opposed to a modern electronic cigarette).
APV (Advanced Personal Vaporiser) / PV (Personal Vaporiser): Modern terms for e-cigarette, usually referring to devices with adjustable wattage, voltage, or temperature control. People often use these terms to distance vaping from smoking.
ASH (Action on Smoking and Health): A UK public health organisation that cautiously supports vaping as a smoking cessation tool, though is criticised for not fully recognising its recreational use and harm-reduction role.
Atomiser (US: Atomizer) / Atty: The component inside a tank that heats e-liquid into vapour. Contains the coil and wick. “Atomiser” is now less common; most vapers just say “coil.”
Automatic E-cigarette – See Inhale Activated
B
Bar Salts: A fairly recent trend in e-liquid, made with nicotine salt, which are designed to mimic the smoothness and flavours of disposable vapes. Usually 50/50 VG/PG, ideal for MTL kits.
Battery: The power source for a vape. Most are rechargeable lithium-ion. The capacity of a battery is measured in milliamp hours (mAh). Higher mAh = longer battery life. Vape batteries are either internal (the battery can’t be removed and the whole device is charged, like a phone) or external (the battery can be removed and charged separately). Safe handling and storage of batteries is essential.
Bottom Coil tank (BCC): A tank where the atomiser and heating coil is located at the bottom of the tank. These are usually also filled from the bottom end of the tank as opposed to the top.
Bottom Dual Coil (BDC): A tank design with two coils at the base for a stronger throat hit and more vapour. Will also drain batteries quicker than a single coil tank. Increasingly being replaced by vertical coil tanks.
Bottom Vertical Coil (BVC): A bottom coil tank with a single coil in vertical position, which improves the airflow.
Box Mod: A larger, box-shaped mod with more power and settings than standard kits. Popular with advanced or ‘hobbyists’ for sub-ohm vaping and cloud production.
BVC (Bottom Vertical Coil): A vertically positioned coil at the base of the tank for improved airflow and flavour.
C
Cart: See Cartridge.
Cartomiser: A small tank with an integrated coil. Often disposable, sometimes resembling a cigalike. Now largely replaced by more modern systems.
Cartridge (Cart): A container, often pre-filled, that holds e-liquid and sometimes a coil. Common in closed-pod or pre-filled pod systems.
Ceramic Coils: A coil using ceramic for durability and a smooth flavour. Resists burning better than standard wire coils.
Charger: Used to recharge batteries. Low-amp USB charging is safer than high-amp phone chargers. See our Battery Safety Guide.
Cigalike: An early e-cigarette styled to look like a tobacco cigarette. Limited performance led many users to switch to tank systems.
Clapton Coils: A type of coil configuration where a thinner wire is wrapped around a thicker core wire, resembling a guitar string. This design increases surface area, aiming to produce better clouds and flavour.
Clearomiser: An early, transparent tank design, typically made of plastic, Pyrex, or glass, often with measurement markings.
Cloud Chasing: Producing large, dense vapour clouds, usually with high VG e-liquid and sub-ohm coils. Popular in competitive vaping.
Clouds: The visible plumes of vapour produced when a user exhales from a vaping device.
Coil: The heating element that turns e-liquid into vapour. Coils are typically constructed from metal resistance wire, such as Kanthal, Nichrome, or Nickel. The resistance of a coil, measured in Ohms (Ω), directly impacts the vaping experience; lower resistance coils generally heat faster, produce more vapour, and offer a warmer vape, while higher resistance coils produce less vapour, a cooler vape, and a more intense flavour.
Connection Pin: The contact from the battery that connects to the atomiser or tank, supplying it with power. Proper connection is necessary for the device to function.
D
Deep Lung: This term describes a method of vaping where the user inhales the vapour straight into their lungs after taking a long draw. It is essentially synonymous with Direct to Lung (DTL) vaping.
Diacetyl: A banned flavouring in UK e-liquids, linked to bronchiolitis obliterans (“popcorn lung”). See Vaping Myth 7 on the NHS’s myths about vaping page.
Direct to Lung (DTL)/Deep Lung: Inhaling the vapour directly into the lungs without first holding it in the mouth. A DTL device will have more airflow and lower resistance coils and will produce more vapour than an MTL device, especially when paired with a higher VG e-liquid.
Disposable E-Cigarette: Single-use vapes, often with sweet flavours, banned in the UK for environmental and youth uptake concerns (link: UK Gov ban announcement).
DIY (Do-It-Yourself): Mixing your own e-liquid from base liquids, flavour concentrates, and nicotine.
Draw: See Inhale.
Drip Tip: The mouthpiece of a vape. Common fittings include 510 (narrow) and 810 (wide).
DNA Chipset/DNA Mod: A type of chipset inside a mod that provides control over the power delivery to the coil.
Dripping: Dripping e-liquid directly onto an open coil without a tank. Dripping requires the use of a special dripping atomiser with larger coils.
Dry Burn / Dry Hit: A burnt taste caused by vaping with too little e-liquid on the coil.
E
E-liquid: The liquid vapourised in a vape, usually containing vegetable glycerine (VG), propylene glycol (PG), flavourings, and optional nicotine.
EGO: The original eGo was an early electronic cigarette model manufactured by JoyeTech. However the word Ego is now primarily used to refer to the connection type/size of these early mods and tanks.
ENDs: Electronic Nicotine Devices, another alternative name for electronic cigarettes, which is often used by scientists in their research into electronic cigarettes.
EVALI:A lung injury outbreak in the USA (2019) linked to illicit THC vapes containing Vitamin E acetate.
F
Flavouring (Flavour Concentrates): Food-grade concentrates used in e-liquid. DIY mixers either blend single flavours or use pre-mixed ‘One Shot’ flavour concentrates. Flavourings usually have a propylene glycol base.
Flooding: When the coil is oversaturated with e-liquid, causing gurgling, spitting, and weak vapour.
Freebase Nicotine: Traditional nicotine form, slower to absorb and giving a stronger throat hit than nicotine salts. We refer to it as classic nicotine, or just nicotine on Vapable, as it has been the only form used in vaping until recently.
French Hit: Exhaling vapour from the mouth and inhaling it through the nose.
G
Greening / Nic Sick: Nausea or dizziness caused by excessive nicotine intake.
Grub Screw: A small screw used in atomiser posts, often with a pointed tip to better secure wires. As they are tiny and fiddly most rebuildable atomisers (RBAs, RDAs, RTAs) are supplied with spares.
H
Herbert Gilbert: Regarded by many as the true inventor of the e-cigarette. In the 1960s, he designed and built a battery-powered inhalation device. Unfortunately, his revolutionary invention was largely ignored at a time when there wasn’t much awareness about the dangers of cigarettes.
High VG E-liquid: E-liquid with a higher ratio of vegetable glycerine to propylene glycol, producing bigger clouds and a smoother vapour to inhale. Best for higher-powered sub-ohm devices. Thinner (more PG) liquids are recommended for beginner and standard vape kits..
Hon Lik: Credited as the inventor of the modern electronic cigarette. He released his smoking alternative to the public in 2006 and could, arguably, be credited with playing a significant role in massively reducing smoking-related deaths globally.
I
Inhale: Breathing in vapour from a vaping device.
Inhale Activated: A vaping device that is activated when you inhale, rather than when pressing a button. Inhale activation is very common with modern pre-filled and refillable pod devices.
J
Juice: See E-liquid.
L
Lithium Ion Batteries: Virtually all vaping devices are powered by rechargeable lithium ion batteries, which are also used in many consumer electronics, toys, power tools, etc.
Longfill: A bottle prefilled with the correct amount of a pre-mixed flavour, ready to fill up with a DIY mixer’s preferred ratio of PG, VG & Nicotine. A longfill takes the flavour blending part of the process out of making a shortfill sized DIY e-liquid – while offering more control than a shortfill.
M
MAh: The capacity of a battery is expressed in milliampere-hours (mAh). The higher the mAh number the longer the battery will last before requiring a recharge.
Mech Mod: (Mechanical Mod) A device which has a battery and a switch with no adjustment or protection. For expert users only.
MHRA: The Medicines and Healthcare products Regulatory Agency (MHRA) tightly regulate the sale of e-liquids in the UK. All e-liquids brought onto the market must be registered with detailed information, including a full list of ingredients. If you only buy e-liquid from reputable suppliers, such as Vapable, you can be assured that they have been stringently regulated.
Mesh Coil: A perforated metal sheet used as the coil. Provides even heating, better flavour, and longer life.
Mod: The term ‘mod’ used to refer to a custom built vaping device. It is now used to refer to the main powered body of any vaping device.
Mouth to lung (MTL): Inhaling vapour into the mouth and holding there before drawing it into the lungs. Because this is how smokers inhale cigarette smoke, virtually all beginner vape kits are designed for this inhalation style.
N
Nicotine: The chemical in tobacco and e-liquids. Contrary to popular misconception, nicotine is not considered to be a major cause of disease without being burned in a cigarette. According to the NHS “[Nicotine] has been used safely for many years in medicines to help people stop smoking.”
Nicotine Salts (Nic Salts): A smoother, faster-absorbing nicotine form used in nic salt e-liquids, which are ideal for use in refillable pod systems.
Nic Shots: 10ml bottles of nicotine for adding to shortfills and DIY e-liquids. Since the passing of the TPD, nic shots are the only legal way to acquire nicotine for vaping. Higher strength (usually 72mg) nicotine used to be commonly used by DIY vapers but is now only permitted for sale to businesses. See our nic shot mixing guide for advice on their use.
O
Ohm (Ω): The unit of measurement for electrical resistance. It describes how difficult it is for an electrical current from the battery to pass through the heating coil. A lower Ohm number indicates lower resistance, leading to faster heating and generally greater vapour production. Conversely, higher resistance coils heat less, produce smaller vapour amounts, and often result in a cooler, more intense flavour.
Oils: Some people refer to e-liquids as oils. But, for clarity, they aren’t oil based and there isn’t any oil in e-liquid – if there were it would be incredibly damaging to vape.
Ohm (Ω): An Ohm is the unit of measurement for electrical resistance. It describes how difficult it is for an electrical current from the battery to pass through the heating coil. A lower Ohm number indicates lower resistance, leading to faster heating and generally greater vapour production. Conversely, higher resistance coils heat less, produce smaller vapour amounts, and often result in a cooler, more intense flavour.
P
Passive Vaping: unlike smoking, there is no evidence that vaping is harmful to the people around you. See Myth 8 on the NHS’s Myths and Facts about vaping page.
Personal Vapouriser (PV): An alternative name for a vaping device.
Priming/Prime: Adding a few drops of liquid to the wick/coil and allowing it to soak in before reassembling the tank and filling with juice.
Propylene Glycol (PG): One of the ingredients of e-liquid and a common carrier for flavouring and nicotine. E-liquid high in PG would be thinner, offer more throat hit but less vapour and would produce better flavour than one with higher VG.
Pod: An e-liquid tank (the top liquid-holding part of a pod kit), supplied either pre-filled with liquid and disposable, or empty but refillable with your own e-liquid.
Pod Mod: The bottom power source part of a pod kit – though many would just call it the battery part.
Prefilled Pod Kit: A pod system with sealed, pre-filled disposable pods. A legal alternative to disposable vapes in the UK because the pod can be replaced and the battery can be recharged.
Puff: A puff referring to a single inhale of a vape became popular with the rise of disposable vapes. They were often marketed as containing X number of puffs. Though some manufacturers continue to use the term, it is impossible to promise a certain number of puffs from a bottle of e-liquid because of the variety of peoples’ vaping styles and devices.
R
Refillable Pod Kit: A step up from pre-filled pod devices, offering larger battery life, refillable, replaceable pods and often adjustable airflow and power. They are also simpler, smaller and more convenient than advanced vape kits for most users. Far and away the most popular vaping systems in the UK right now.
Resistance: Measured in ohms (Ω), resistance measures how easily current can flow through a coil (or any wire). A coil below 1 ohm is for sub-ohm (high-power and usually DTL) vaping. Generally speaking, lower ohms = hotter coils and more vapour, higher ohms = cooler coils and less vapour but potentially better flavour.
S
Shortfill: Nicotine-free e-liquid sold in larger bottles with space for nic shots – enabling vapers to easily make larger bottles of e-liquid. Shortfills became popular after the TPD, which prohibited the sale of e-liquids containing nicotine in any size above over 10ml.
Short Shot: A large (typically 200ml-1000ml) bottle prefilled with the correct amount of a pre-mixed flavour, ready to fill up with a DIY mixer’s preferred ratio of PG, VG & Nicotine. A short shot takes the flavour blending part of the process out of making a DIY e-liquid – while offering control of VG/PG ratio and nicotine strength.
Stealth Vaping: Deliberately reducing visible vapour (when large clouds aren’t appropriate) by using lower VG liquids, possibly in less powerful devices – and adjusting your vaping style (holding your breath and/or exhaling slowly).
Stovetop Coils: Flat and circular coils, resembling the heating elements on electric stoves. Their flat shape increases surface area, contributing to greater vapour production.
Sub-Ohm Vaping: Using coils with resistance below 1.0 ohm, typically producing more vapour and requiring more power. Generally used with advanced vape kits.
T
Tank: The top part of a vape kit that holds the e-liquid and turns it into vapour by the use of a coil.
Temperature Control (TC): A feature on some mods that lets you set the maximum temperature for the coil instead of adjusting wattage or voltage. Helps prevent dry hits, avoids burning the wick, and provides consistent flavour.
Throat Hit (TH): The tingling or slightly harsh sensation at the back of the throat when inhaling vapour. Often compared to smoking, it’s stronger with higher nicotine levels or higher PG content e-liquid.
Top Fill – A tank design where e-liquid is added from the top, usually by sliding or unscrewing the top cap. Easier and less messy than bottom filling.
V
Vaper’s Tongue: A Temporary loss of the ability to taste a familiar e-liquid flavour, often caused by vaping it exclusively for long periods. Can be relieved by switching flavours, drinking water, or using strong tastes like mint or coffee.
Vaping (To Vape): The act of using an electronic cigarette to inhale vapour produced from e-liquid.
Vapour: The aerosol produced when a coil/atomiser heats e-liquid. Sometimes called clouds.
Variable Voltage (VV): A mod that allows you to set the voltage sent to the coil, controlling vapour production and flavour intensity.
Variable Wattage (VW): A mod where you set the wattage and the device automatically adjusts voltage for optimal coil performance. Offers consistent vapour and flavour.
Vent Holes: Safety features in mods that allow gases to escape if the battery overheats, helping prevent dangerous failures.
VG (Vegetable Glycerine): A naturally derived liquid used in most e-liquids. Thicker than PG, it produces larger clouds and a smoother inhale but wicks more slowly in some coils.
numbers
510 – The most common connection type between vape batteries and tanks. Named for its thread pattern, the 510 connection is used in most modern vape devices for compatibility between models/brands.