Vape Terminology Glossary: Every Vape Term You Need To Know

The vape world has its own language, and if you’ve just started vaping, there’s probably some terms you’re still confused by. 

We built this glossary to cover the terms you'll actually run into. Whether you’re thinking about upgrading your setup or just trying to figure out what’s on the label of what you're vaping right now, these are some helpful terms to know.

E-Liquid & Flavor Terms

E-liquid (a.k.a. vape juice) — The liquid that gets heated into vapor. Usually a mix of four ingredients: PG, VG, nicotine, and flavoring. If you want the full breakdown of what's actually in the bottle, we covered it in What Is E-liquid? What's Inside Vape Juice.

PG (Propylene Glycol) — A thinner liquid base that carries flavor hard and delivers a stronger throat hit. High-PG juices taste bold but produce less vapor.

VG (Vegetable Glycerin) — A thicker, slightly sweet base responsible for those big, dense clouds. High-VG juices are smoother on the throat but mellower on flavor.

PG/VG Ratio — The split or ratio between the two, usually written like 50/50 or 70/30. It's the single biggest factor in how a juice feels and hits. We go deep on this one in our Guide To PG/VG Ratios.

Synthetic Flavoring — Lab-created flavor compounds engineered for consistency, batch after batch. Curious how that compares to "natural" flavoring? We settled the debate in Natural vs. Synthetic Flavoring in E-liquid.

Steeping — Letting an e-liquid sit so flavors can meld and mellow over time, similar to how a marinade works. More relevant for bottled juice than disposables.

Vaper's Tongue — Temporary flavor blindness where everything starts tasting like nothing. It happens to everyone eventually. Here's how to beat it when it does.

Shelf Life — How long an e-liquid stays good before flavor and nicotine potency start to fade. Storage matters more than most people think: see Can E-Liquid Expire? and How To Store E-Liquid for the full rundown.

Mixing (Juice Mixing) — Combining two or more e-liquids to create a custom flavor blend. Fun in theory, but riskier in practice. Read Can You Mix Vape Juice? The Dos and Don'ts before you start playing bartender with your bottles.

Burnt Hit — A harsh, scorched taste that happens when a coil fires without enough e-liquid soaking it. Usually a sign it's time for a refill or a new coil. More on that in Why Your E-Liquid Tastes Burnt.

Nicotine Terms

Freebase Nicotine — The traditional form of nicotine that’s been used in e-liquids for decades. It hits harder and faster at higher strengths, which is why it's usually paired with lower mg levels. Shop the lineup on our Freebase page.

Salt Nicotine (Nic Salt) — A smoother form of nicotine that allows for higher concentrations without the harsh throat hit. It's the standard in most disposables. Not sure which camp you're in? Freebase vs. Salt Nicotine: What's The Difference lays it out side by side, and our Salt Nicotine collection has the goods.

Nicotine Strength (mg) — The concentration of nicotine in a juice, measured in milligrams. Higher isn't always better, it depends on your tolerance and habits. We break down how to pick your strength in Nicotine Strengths Explained.

Zero Nicotine (0mg) — E-liquid made with all the same flavor and base (PG/VG) as regular e-liquid, just without any nicotine added. Popular for people who vape for the flavor and ritual without the nicotine, or who are stepping down from higher strengths.

Types Of Vape Devices

Mod — Short for "modified" — a device with a battery and control chip built to be paired with a separate tank or pod. Mods give you control over wattage, airflow, and sometimes temperature, which is why they're the go-to for people who want to fine-tune every hit.

Box Mod — The most common style of mod: a rectangular device, usually with a screen, buttons, and a removable or built-in battery. If you've seen someone adjusting settings before they vape, they're probably holding a box mod.

Pod System — A smaller, simpler device built around refillable or pre-filled pods instead of a tank. Less tinkering than a mod, more control than a disposable, it’s the perfect middle ground.

Pod — The small cartridge that snaps into a pod system, holding the e-liquid and (usually) the coil in one piece. Some are refillable, some come pre-filled and get tossed when empty.

Vape Pen — A slim, pen-shaped device that's simpler than a box mod but not disposable. It usually comes with a fixed or low-range wattage with a refillable tank. A common first step up from disposables.

Disposable Vape — A single-use, pre-filled, pre-charged device you toss when it's empty. No refills, no coil swaps, just open and go. Check out the Skwezed x iJoy lineup for our selection of disposable. Not sure disposables are for you? Disposables vs. Bottled E-Liquids can help you decide.

Sub-Ohm Vaping — Vaping with a coil rated below 1.0 ohm, which allows more power through for warmer vapor and bigger clouds. Almost always a DTL, high-VG setup.

Variable Wattage (VW) — A mod feature that lets you manually set how much power hits the coil. Higher wattage generally means bigger clouds and more warmth; lower wattage means a cooler, more flavor-focused hit.

Temperature Control (TC) — A mode on advanced mods that caps the coil's temperature to prevent dry hits and burnt flavor once the e-liquid runs low around the coil.

Draw-Activated — A device that fires automatically when you inhale, with no buttons involved. Most disposables and simple pod systems work this way.

Button-Activated — A device that requires pressing a fire button to produce vapor. Common on mods and higher-end pod systems, and it gives you more control over each puff.

Device & Hardware Terms

Coil — The heating element inside your device that turns e-liquid into vapor. Coils wear out over time. Here's how long they actually last and what to expect as they age.

Atomizer — The full heating assembly: coil, wicking, and housing together, that actually vaporizes the e-liquid. "Coil" and "atomizer" get used interchangeably a lot, but the atomizer is technically the whole unit the coil sits inside.

Drip Tip — The mouthpiece you actually put your lips on. Some are fixed, some pop off and swap out for a different shape, width, or material. Drip tips are mostly a comfort and airflow-feel preference.

Battery — The power source that fires the coil. Built into most disposables and pod systems, removable in a lot of mods. Battery health directly affects vapor output, so it's worth treating with some care: see Vape Battery Safety 101 for the do's and don'ts.

USB-C (Charging Port) — The charging standard on most modern rechargeable disposables and pod systems, replacing the old micro-USB port. Faster charging, and the cable's probably already on your desk.

O-Ring — A small rubber seal that keeps e-liquid from leaking out around the tank, pod, or connection points. They wear out and lose their seal over time, making it one of the more common, most overlooked causes of a leaky device. More on that in Why Is My Vape Device Leaking?

Open System — A refillable device you fill with your own bottled e-liquid. More control, more maintenance. See how it stacks up against the alternative in Open System vs. Closed System Vapes.

Closed System — A sealed, pre-filled device (think most disposables and pod systems). Zero setup, zero mess, done when it's done.

Airflow — The amount of air pulled through a device while vaping. More airflow means bigger clouds and a looser draw; less airflow means a tighter pull and more concentrated flavor. We explain the mechanics in How Does Airflow Change Your Vape Experience?

Puff Count — The manufacturer's estimate of how many puffs a disposable will deliver before it's done. It's a guideline, not a guarantee. See How Many Puffs Is Enough? for what actually affects that number.

Leaking — When e-liquid seeps out around the coil, mouthpiece, or seals instead of staying where it belongs. Usually fixable, but see Why Is My Vape Device Leaking? for the common causes and fixes.

Priming — Letting e-liquid fully saturate a new coil before firing it. This is usually a few minutes of just letting it sit. Skip this step and you're looking at a burnt hit on your very first puff.

Vaping Style Terms

MTL (Mouth-To-Lung) — Drawing vapor into your mouth first, then inhaling it into your lungs. Like the same motion as taking a drag off a cigarette. Tighter draw, more flavor-forward. Usually compatible with above 1.0 ohm vaping styles like pod systems and disposables that use nic salt e-liquids.

DTL (Direct-To-Lung) — Pulling vapor straight into your lungs in one motion. Looser draw, bigger clouds, higher VG juices. Usually compatible with sub-ohm setups like box mods and advanced kits that use freebase e-liquids. We break down which style actually fits your setup in DTL vs. MTL Vaping.

Throat Hit — The sensation (sometimes sharp, sometimes smooth) that you feel in your throat when you vape. Nicotine type and PG/VG ratio both play a role here.

Quick-Hit Slang

• Chain vaping — taking consecutive puffs with little to no break in between
• Cloud chasing — vaping specifically to produce large, dense vapor clouds
• Dry hit — a harsh, burnt-tasting puff, usually from a worn coil or low e-liquid
• Ohms — a measure of coil resistance; lower ohms generally mean bigger clouds and warmer vapor

Frequently Asked Questions (FAQ)

What's the difference between vape juice and e-liquid? 

Nothing. They're the same thing, just different names people use interchangeably.

Do I need to know all these terms to vape? 

Not at all. But knowing the difference between MTL and DTL, or freebase and salt nic, makes it a lot easier to pick a device and flavor you'll actually enjoy.

What's the most important term for a beginner to know? 

PG/VG ratio and nicotine type. Together, they determine almost everything about how a vape feels: throat hit, cloud size, and flavor intensity.

Where can I learn more vaping basics? 

Our full blog covers everything from troubleshooting to flavor guides to device care. Consider this glossary your starting point, not the whole map.