Jargon Buster A–Z
R terms
25 glossary terms starting with R.
Letter overview
What is inside this section
Internet Basics
5 terms
Devices & Hardware
2 terms
Apps & Software
2 terms
Security & Privacy
3 terms
Communication
4 terms
Social Media
3 terms
Payments & Shopping
2 terms
AI & New Tech
4 terms
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RAM (Random Access Memory)
Devices & HardwareTemporary memory your device uses to run programmes actively — more RAM means it can do more things at once without slowing down.
Like the size of your desk — a bigger desk means more files open at once.
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Ransomware
Security & PrivacyA type of malware that locks your files or device and demands payment to restore access.
Like someone changing the locks on your own home and demanding money for the new key.
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RCS (Rich Communication Services)
CommunicationAn upgrade to SMS that adds features like read receipts, typing indicators, and high-quality photo sharing.
Like upgrading from sending postcards to using a full messaging app, but through your phone's standard text service.
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Reach
Social MediaThe number of unique people who saw a piece of content.
Like counting how many different households received a flyer rather than total flyers sent.
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Read Receipt
CommunicationA notification that tells the sender when their message has been opened and read.
Like getting a signed confirmation that your letter was received and opened.
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Recommendation Engine
AI & New TechAn AI system that suggests content, products, or services based on your past behaviour and preferences.
Like a friend who knows your tastes perfectly and always knows what to suggest next.
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Recovery Email
CommunicationA backup email used to regain account access.
Like an emergency spare key.
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Recurring Payment
Payments & ShoppingA regular automatic payment charged at set intervals, like a monthly subscription.
Like a standing order that pays a bill automatically each month.
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Red Team
Security & PrivacyA group that acts as simulated attackers to test an organisation's security defences.
Like hiring actors to attempt a robbery so you can test how well your security team responds.
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Redirect
Internet BasicsAutomatically sending visitors from one web address to another.
Like a forwarding address that sends mail to your new home.
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Reel
Social MediaA short vertical video format on Instagram or Facebook, typically up to 90 seconds.
Like a bite-sized TV clip designed for quick viewing on a phone.
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Refresh
Internet BasicsReloading a webpage to see updated information.
Like checking the notice board again for new updates.
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Refresh Rate
Devices & HardwareHow many times per second your screen updates the image, measured in Hz — higher means smoother motion.
Like how many frames per second a film shows — more frames means smoother movement.
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Refund
Payments & ShoppingMoney returned to you after cancelling a purchase or returning a faulty item.
Like getting change back after returning something to a shop.
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Remote Patient Monitoring
AI & New TechUsing devices to track a patient's health data at home and send it to a healthcare provider.
Like a nurse remotely reading your vital signs without visiting.
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Reply All
CommunicationResponding to an email so that every person who received the original message gets your reply.
Like answering a question in a group meeting so everyone hears the answer.
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Report
Social MediaFlagging content or an account to the platform as violating the rules.
Like filing a complaint with a shop manager about inappropriate behaviour.
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Responsible AI
AI & New TechThe practice of developing AI that is fair, transparent, safe, and accountable.
Like professional ethics in medicine — great power must come with equally great care and accountability.
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Responsive Design
Internet BasicsA website design approach that adapts the layout automatically to fit any screen size.
Like a water that fills any container it is poured into.
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Restore from Backup
Apps & SoftwareRecovering your phone's data, apps, and settings from a previously saved backup.
Like using a spare key to reopen your home after losing the original.
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Restore Purchases
Apps & SoftwareA feature in apps that reinstates paid content or subscriptions on a new device.
Like presenting a receipt to claim goods you have already paid for.
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Right to Be Forgotten
Security & PrivacyThe right under data protection laws to request that a company delete your personal data.
Like asking a library to remove all records of your borrowing history.
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Robot
AI & New TechA machine that can carry out a complex series of actions automatically, often programmable.
Like a tireless mechanical worker programmed to repeat tasks precisely.
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Router
Internet BasicsA device that shares internet access with your devices.
Like a traffic controller directing vehicles.
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RSS Feed
Internet BasicsA format that delivers updates from websites directly to you without needing to visit each site.
Like having your favourite newspapers delivered to your door automatically.