extension
gb/ɪkstˈɛnʃən/ us/ɪkstˈɛnʃən/
B1
英語
~ 2200
語義
0件の語義
名詞
B1
entity
1
Extra time given
Extra time that is given after the first time limit is over.
用法パターン：
grant [someone] an extension
よくある間違い：
Learners sometimes confuse 'extension' with 'expansion' — 'extension' is about extra time or length, while 'expansion' is about becoming bigger or wider.
類義語
prolongation (More formal and less common than 'extension'.)
|
continuation (Focuses on something continuing rather than extra time being officially granted.)
対義語
termination (Refers to ending something, the opposite of allowing more time.)
コロケーション
grant an extension
|apply for an extension
|deadline extension
|request an extension
テーマ
business
|education
|daily life
|time
|work
例文
- The professor gave me a one-week extension on my essay.
- We requested an extension for the project deadline.
- You can apply for an extension if you need more time to file your taxes.
学習者向け例文
- I got an extension for my homework.
- She asked for an extension to finish the job.
- We need an extension to complete the work.
名詞
B1
entity
2
Added length or part
Something that you add to make something longer or bigger.
用法パターン：
an extension to [something]
よくある間違い：
Learners may confuse 'extension' (adding length) with 'annex' (a separate building or section).
類義語
addition (General term for something added; not specific to length.)
対義語
shortening (The act of making something shorter, opposite of adding length.)
コロケーション
hair extension
|building extension
|extension cord
テーマ
construction
|technology
|daily_life
|core_vocabulary
例文
- They built a new extension to the kitchen.
- I bought a hair extension for the wedding.
- We used an extension cord to connect the lamp.
学習者向け例文
- The house has a new extension.
- I need an extension cord for my computer.
- She wore a hair extension.
名詞
technical
B2
entity
3
File type suffix
Letters at the end of a file name that tell you the kind of file it is.
よくある間違い：
Learners may confuse 'extension' with 'attachment' in computing; they are different concepts.
類義語
suffix (In computing, can mean the same as 'extension', but also used in linguistics.)
コロケーション
file extension
|.jpg extension
|.docx extension
テーマ
technology
|communication
例文
- The file has a .pdf extension.
- Change the file extension to .txt before uploading.
- Some programs cannot open files with that extension.
学習者向け例文
- This file has a .jpg extension.
- What is the extension of this file?
- I changed the file extension to .docx.
名詞
B1
entity
4
Internal phone line
An extra phone line in the same building as the main phone line.
類義語
branch line (More technical and less common term for internal phone line.)
コロケーション
call an extension
|dial an extension number
テーマ
communication
|work
例文
- Please dial extension 302 for customer service.
- He works in HR; his extension is 215.
- I was transferred to another extension.
学習者向け例文
- Please call me at extension 105.
- Her office has its own extension.
- You can reach him on extension 302.
文法
辞書形
extension
IPA
GB/ɪkstˈɛnʃən/
US/ɪkstˈɛnʃən/
音節・強勢
ex - ten - sion （3音節）
Stress on 2nd syllable (ten)
活用形
Noun
- Base: extension
- Plural: extension, extensions
関連語
Forms
extensions
noun
Core family
Related words
extent
noun B1
extendable
adjective
Advanced or less common
extensible
adjective
extensibility
noun
表現
get an extension
1/ɡˈɛt ən ɪkstˈɛnʃən/
fixed phrase
Receive more time allowed
To be given more time to do something after the original deadline.
例文
- I managed to get an extension on my rent payment.
- She got an extension for her visa application.
hair extensions
1/hˈɛɹ ɪkstˈɛnʃənz/
fixed phrase
Added hair pieces for length/volume
Pieces of hair that are added to your own hair to make it longer or thicker.
例文
- She wore hair extensions for her wedding day.
- Hair extensions can be made from real or synthetic hair.
extension cord
1/ɪkstˈɛnʃən kˈɔɹd/
fixed phrase
Electrical cable extender
A long wire with plugs that lets you bring electricity to a place farther away.
例文
- We used an extension cord to plug in the lights outside.
- We used an extension cord to hang lights in the garden.
- The vacuum cleaner couldn't reach without an extension cord.
- The fan wouldn’t reach the bed, so she plugged it into an extension cord.
- Make sure the extension cord is rated for outdoor use.