VR Dictionary & Glossary: Definition and Meaning of Virtual Reality Terminology

Virtual Reality, VR, Immersive Technology & Simulated Environment

VR Dictionary & Glossary: Definition and Meaning of Virtual Reality Terminology

VR Dictionary and Glossary

Recently updated on May 1st, 2024 at 04:48 am

Below is the VR dictionary or glossary that contains the list of terminology used widely in the Virtual Reality (VR) area and industry together with their definition and meaning. This is a growing list as we will keep updating the list from time to time. We try our best to explain using the layman terms as much as possible so you can understand the jargons used in this industry quickly and easily.

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It is a short form for “Three-Dimensional” and it refers to the spatial dimensions of width, height and depth.


6DOF (Six Degrees of Freedom)

This refers to the direction of the movement of an object in a three-dimensional (3D) space. The movement consists of forward/backward, right/left, up/down, pitch, roll and yaw.


Active Shutter 3D

It is a technique to display the 3D stereoscopic images by showing the left eye image and the right eye image alternately in a very fast manner.


It is a method to create the illusion of three-dimensional image with depth perspective by combining the right-eye-view image and left-eye-view image in one single image.


It is the opening through which light passes into the camera. 

AR (Augmented Reality)

It is a technology or method to combine or integrate the virtual or digital objects with the live environment and real surrounding.


It is a representation of the people or user in the virtual environment in the form of virtual figure, icon or character.



It is the maximum amount of data that can be received by an internet or network user at a given amount of time. Usually, it is calculated in megabits per second (Mbps).


It is a unit of data that consists of eight bits. Most computers use it to represent a character such as a letter or number.



It stands for “Cave Automatic Virtual Environment”. It is a virtual reality environment using projectors where they are directed to the walls of a room-sized cube.


It is a small CPU or processor which is built into a big CPU or CPU socket. For example, a Quad-Core processor is a CPU that has four processing units in a single integrated circuit.


Data Glove

It is a type of glove embedded with sensors that can sense the movement of hands which can then be use to manipulate or move the objects in the virtual environment. Also known as wired glove.


It stands for “Dynamic Random Access Memory” where it is a type of semiconductor memory that allows the processor to access any part of the memory directly without having to find it from the starting place. It is located close to the processor and enables faster access to the data than the storage media such as hard disk drives.


Extended Reality

Also known as XR, it refers to all real and virtual combined environments and human-machine interactions generated by computer technology and wearables.

Eye Tracking

It is the capability to track and record the line of sight of the user.



FPS stands for “Frame Per Second“. It is a measure of the rate at which a game can produce and render frames. 


FPS also can stands for “First-Person Shooter“. It is a type of game where the player experiencing the action directly through the eyes of the main character. Normally, the game is centered on gun fighting and other weapon-based combat.

FOV (Field of View)

It is the area or coverage that a person can see through their eyes or via optical device.



GB stands for “Gigabyte“. It refers to the specific unit of data that is equivalent to about 1 billion bytes of data.


GPU stands for “Graphics Processing Unit“. It is a special electronic circuit with the main purpose to accelerate computer graphics, processing of the image and rendering 3D graphics.



This is a kind of technology that focus on the sense of touch where it simulates the feeling of touching or having contact with the virtual objects by applying the vibrations, forces and motions to the body part of the users.

HDR (High Dynamic Range)

It is a technique used in imaging and photography to reproduce a greater dynamic range of luminosity. So you can have greater contrast between light and dark.


It refers to the reproduction of sound or output that has high degree of faithfulness to the original.


HLG stands for “Hybrid Log Gamma“. It is an open-source standard HDR (High Dynamic Range) video format.

HMD (Head Mounted Display)

It is a device that you put or wear on your head which can display the virtual reality environment to your eyes.


It is a technique to display the three-dimensional objects that can be viewed correctly from any direction or angle hence giving the illusion that the objects are really there.


IPD (Interpupillary Distance)

It is the distance between the centers of the pupils of the eyes. It is measured in milimeters.



It is the loss of transmitted data between network devices. It may cause your video streaming not looking smooth.


It refers to the perceived uneven or jerky video playback arising from movement of objects or edges or detail from one frame to the next. 



It is a decimal unit prefix in the metric system denoting multiplication by one thousand.



It is the time difference between the user physical action and the reflection of that action in the virtual environment. Also known as lag time.


LiDAR is a short form of “Light Detection and Ranging“. It is a type of scanner that emits a laser to more accurately measure distances of surrounding objects.


Mocap (Motion Capture)

It is a technique to record the actual movement of a person or object and then translate it to a digital form so that the information can be used in the virtual or digital environment. It is also known as motion tracking.

MR (Mixed Reality)

It is the merging of the virtual and real worlds where the physical and digital objects interact with each other in real time thus produce new environments and visualizations.


Neural Engine

It is a series of AI accelerators from Apple which is designed for machine learning. It accelerates machine learning (ML) and artificial intelligence (AI) algorithms. Furthermore, it offers tremendous speed, memory, and power advantages over the main CPU or GPU.


NPC stands for “Non-playable Character“. It refers to the character in the game that is not controlled by someone playing the game.


NPU stands for “Neural Processing Unit“. It is a type of chip that can performs AI tasks faster than GPUs and CPUs.


ODT (Omnidirectional Treadmill)

It is a special kind of treadmill device that can allows people to walk or move in any direction in the virtual environment.


OLED stands for “Organic Light-Emitting Diode“. It is a display technology where the light is produced by organic molecules. To add, the pixel in the display is made of material that glows when you hit it with electricity.


Pancake Lenses or Optics

It is the type of lenses that is flat, thin and short. The main purpose is to provide quality optics in a compact package.


It is a feature in VR headset or device where you can step out of your VR world to see your surroundings in real world.


This is a capability that allows the creation of 3D (three-dimensional) objects by using the 2D (two-dimensional) images.


Pixel is a short form of “Picture Element“. It is the smallest element that can be manipulated by software or applications.


It stands for “Pixels per degree” and it refers to the number of pixels that are required to display one degree of visual angle on a screen or display.


PPI stands for “Pixels Per Inch“. It refers to the number of pixels contained within each inch of a digital image. Normally, the higher the value of PPI, the better the quality of the image.



It is the animations and illustrations that are produced by using Oculus Quill application.



RGB stands for “Red, Green and Blue“. It refers to the color model used on the digital display screen.


RPG stands for “Role-Playing Game“. It refers to the type of game where players assume the roles of characters in a fictional setting.


Screen-Door Effect

The fine lines separating pixels that is visible in the displayed image. You can see the visible gaps or space between pixels when viewing the screen or display very closely.


It is a process or approach to mimic or imitate the real environment inside the virtual environment.

Spatial Computing

It is the technology that allow us to interact with digital information while we are in the real or physical world.


It is a technique or method to enhance the three-dimensional (3D) viewing of a media such as image or video by introducing the illusion of depth to it.



It is a technology to mimic that you are present in the particular location although your physical body is at somewhere else.



UHD stands for “Ultra High Definition“. It refers to the display that can support the minimum resolution of 3840 × 2160. Normally, television has two types of UHD which are 4K UHD and 8K UHD.


USB stands for “Universal Serial Bus”. It is a standard use in the industry that allows data exchange and delivery of power between many various types of electronics.


VE (Virtual Environment)

It is an environment which is created digitally using computer technology that can make the user feel like he or she is there. Furthermore, they can also explore and manipulate the objects in that digital world.

VR (Virtual Reality)

Virtual reality is a technology or method where people can feel and experience with their senses like they are really inside an artificial or simulated environment.



It is an open specification that makes it possible to experience VR by using your browser.


Wi-Fi is a short form of “Wireless Fidelity“. It is a wireless networking technology that allows devices such as computers, smart phones, wearables and other equipment (eg. printers and video cameras) to interface with the Internet.



It is a short form for “Extended Reality“. It is the umbrella term that covers virtual reality (VR), augmented reality (AR), mixed reality (MR), and other immersive technologies.



It refers to the rotation around the vertical axis or commonly known as “Y-Axis”.



It is a cylinder with vertical slits down the sides where the inside of the cylinder displays a set of sequenced images. When the cylinder is spins, it gives an illusion of motion of the images. 


That is the list of VR dictionary & glossary so far from us. We will keep updating it from time to time.

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