Jargon Buster A–Z
U terms
14 glossary terms starting with U.
Letter overview
What is inside this section
Internet Basics
3 terms
Devices & Hardware
3 terms
Apps & Software
4 terms
Security & Privacy
1 terms
Communication
1 terms
Social Media
1 terms
Payments & Shopping
1 terms
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UI (User Interface)
Apps & SoftwareEverything you can see and interact with on a screen — buttons, menus, colours, and layouts.
Like the dashboard and controls of a car — what you see and touch to operate the system.
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Unfollow
Social MediaStopping receiving updates from someone you previously followed without removing them as a friend.
Like cancelling a magazine subscription — they still exist but you stop receiving their content.
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Uninstall
Apps & SoftwareRemoving an app from your device.
Like taking a book off your shelf permanently.
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Unknown Caller
CommunicationA call where the caller's number is hidden or not recognised by your phone.
Like a knock at the door from someone you cannot see through the peephole.
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Update Notification
Apps & SoftwareAn alert telling you a new version of an app or system is available.
Like a letter in the post saying a new edition of something you use is now available.
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UPI
Payments & ShoppingIndia's instant payment system that lets people send or receive money quickly using a mobile app, phone number, or payment ID.
Like handing over cash instantly, but through your banking app.
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Upload
Internet BasicsSending a file from your device to the internet.
Like posting a letter into a mailbox.
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URL
Internet BasicsThe web address of a website.
Like the address of a house.
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URL Shortener
Internet BasicsA service that converts a long website address into a much shorter one.
Like giving someone your building's nickname instead of the full postal address.
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USB Drive (Thumb Drive)
Devices & HardwareA small portable storage device that plugs into a USB port to transfer or store files.
Like a very small, lightweight filing cabinet you can carry in your pocket.
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USB Port
Devices & HardwareA rectangular socket on your device used to connect cables, chargers, mice, keyboards, and memory sticks.
Like a universal power and data socket that works with dozens of different accessories.
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USB-C
Devices & HardwareA modern, reversible USB connector used for charging and data transfer on most new devices.
Like a universal key that works the same way regardless of which side faces up.
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Username
Security & PrivacyA name that identifies you on a website or app.
Like your name tag at an event.
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UX (User Experience)
Apps & SoftwareHow easy, enjoyable, and effective it is to use an app or website.
Like the overall feeling of driving a car — comfort, ease of use, and how intuitive the controls are.