In plain English
It is an extra set of digits used along with an organization's main phone number. Those digits direct a caller to a particular person, department, or telephone inside the organization.
In context
Here, extension means the short extra number that goes with the main phone number to reach a specific person, department, or telephone within the organization.
- Situation
- Profile setup, contact details, verification fields, and preference settings
- What it communicates
- labels the optional phone field for an internal extension number.
Meaning limits
The term by itself does not indicate the main telephone number it goes with or the exact destination it reaches.
Examples
“I dialed the school's main number and then entered the principal's extension.”
“Her extension changed when she moved from reception to the accounts department.”