extension
B2Pronunciation
UK
- /ɛkstˈɛnʃən/
US
- /ɪkˈstɛnʃən/
Description
- extra part
- more time
- add-on
- longer reach
- widening
An extension is usually not something completely new; it is more often something that makes what already exists longer, bigger, or able to do more. Think of an extension cord that lets you reach an outlet farther away, or a school getting an extension of the year to make up for snow days. It can also mean a physical addition, such as a house extension that adds extra rooms for a growing family.
The word carries the idea of going beyond the original limit. A student might ask for an extension on a deadline when they need more time to finish an essay. In business, a company might announce a "brand extension," using a well-known name to launch products in a new category. Even your web browser uses extensions: small add-on programs that let it do more than it could before.
The word "extension" refers to the act of making something longer, larger, or more comprehensive. It bridges the gap between physical space and abstract concepts. When you build an extension onto a house, you are literally expanding its physical footprint. However, the term is equally common in the realm of time and logic. A deadline extension grants more time, a contract extension prolongs a professional agreement, and a sales extension keeps a special offer active for a few more days.
In the world of technology, "extensions" are software components that add features to an existing program, such as a browser extension that blocks ads or translates text. In mathematics, the term might refer to extending a number line or a geometric plane. Even in the way we communicate, we use "extension" to describe applying an idea to a new context or adding detail to a thought. For instance, one might say, "As an extension of his previous point, the speaker argued for better funding."
The core idea behind "extension" is adding to what already exists—whether that is space, time, features, or logic. It is about pushing beyond the original boundaries to make something more complete or versatile. So, the next time you hear the word, visualize something being stretched out or supplemented to reach a little further than it did before.
Examples
- 1
School deadline
I asked the teacher for a two-day extension on my essay.
Pattern
ask for an extension on + task
ask for more time to finish it
- 2
Payment deadline
Because of the storm, the bank gave customers an extension until Monday to pay their bills.
- 3
Phone system
If you call the main office, ask for me at extension 204.
Pattern
extension + number
an internal phone number in the same company
- 4
Home addition
They're adding an extension at the back of the house for a bigger kitchen.
- 5
File names
Save the document with the `.pdf` extension before you email it.
Domain
file extension
the letters after the dot in a file name, like .pdf or .jpg
- 6
Sports contract
The club offered the coach a one-year contract extension.
- 7
Course development
This new training program is an extension of the course we took last year.
Pattern
an extension of + thing
a continuation or further development of it
Forms and spellings
2 forms open this card.
Main spelling
- extensionnoun
Forms
- extensionspluralnoun