extension meaning and examples

Meaning

• Extension (noun):

  1. The act of making something longer, larger, or more extensive.
  2. A part that is added to something to increase its size or usefulness.
  3. Extra time allowed for something (e.g., a deadline).
  4. A phone line connected to the main system inside a building.
  5. A computer file suffix (e.g., .docx, .jpg).

Grammar and Usage

• Part of speech: Noun (countable/uncountable depending on context).

• Typical structures:

  • extension of + noun (e.g., extension of the deadline)
  • grant/give/ask for an extension
  • file extension in computing

Common Phrases

• Deadline extension – extra time given.
• Phone extension – internal phone line.
• Extension cord – additional cable to increase reach.
• File extension – suffix indicating file type.
• Building extension – part added to a house or building.

Collocations

• grant an extension
• request an extension
• building extension
• extension cord
• deadline extension
• extension of time

Examples

1. The teacher gave the students an extension on their homework.
2. We built an extension to the kitchen last year.
3. Please dial extension 204 to reach the HR department.
4. The company applied for an extension of the project deadline.
5. You need to check the file extension before opening the document.
6. They used an extension cord to plug in the computer.
7. His job is seen as an extension of his lifelong passion.
8. The government announced an extension of the emergency measures.
9. The app doesn’t recognize this file extension.
10. We asked for an extension of our visa.

Synonyms or Related

• prolongation
• expansion
• enlargement
• continuation
• annex (for building extension)
• add-on
• supplement