Jargon Buster
Plain English meaning, where you may see it, and what to read next if this word still feels unfamiliar.
Quick meaning
A phone number used to join an audio conference call.
Think of it like this
Like a shared telephone number that connects everyone to the same meeting room.
Where you may see this
You may hear this in email apps, messaging apps, video calls, and workplace instructions.
Why it matters
Knowing the term makes it easier to message people correctly and avoid simple communication mistakes.
Say it simply
Dial-In Number means: A phone number used to join an audio conference call.
Keep going
More in Communication
Attachment
A file sent together with an email or message.
BCC (Blind Carbon Copy)
Sending a copy of an email to someone without the other recipients knowing.
Breakout Room
A smaller virtual meeting room created within a larger online conference where smaller groups can have private discussions.
Call Forwarding
Redirecting incoming calls from one number to another automatically.
Caller ID
A feature that displays the name or number of someone calling you before you answer.
CC (Carbon Copy)
Sending a copy of an email to additional recipients who are not the main audience but should be kept informed.
More D terms
Dark Mode
A display setting that changes the background of apps and screens from white to dark, reducing eye strain in dim light.
Dark Pattern
A website or app design trick that nudges users into actions they did not intend, like accidentally signing up for a subscription.
Dark Web
A hidden part of the internet not accessible through regular browsers, often associated with illegal activity.
Data Backup
A copy of important files stored safely elsewhere.
Data Breach
When personal information is exposed without permission.
Data Cap
A limit on how much internet data you can use in a month before your speed is reduced or you are charged extra.